5 Best Proxies for Price Monitoring: Amazon Test Data, ZIP Targeting and Costs

The best proxies for price monitoring are Oxylabs, SOAX and Rayobyte, which passed our vetting and scored 86.93% to 90.78% on residential IPs in Proxyway's US Amazon test. Oxylabs leads, with free US ZIP targeting on any plan. SOAX suits city and ISP checks, and Rayobyte puts ZIP targeting on every Premium Residential tier at the lowest volume rate of the three. For small catalogs, Databay sells 5 GB packs that stay valid for 186 days, and HighProxies rents fixed datacenter IPs for lightly protected stores.

Price monitoring, often called price tracking, means checking competitors' product pages on a schedule and recording the price, stock and seller each time. A proxy sends those checks out through other IP addresses, so the store sees the proxy's location and network instead of your server's. Our explainer on the job a proxy server does covers the basics. Two things decide whether it works: how hard the store screens automated visits, and whether you see the price a shopper in your target market sees.

Every pick comes with its limits, and every price carries its date. TrustMyIP did not buy a plan or test a proxy for this guide. Placement here is not for sale, and none of the links pays us. You will also find the cost of 1,000 checks, official APIs worth trying first, the retailer terms that apply and four self-checks for any proxy.

Author: Christopher Vance Web Infrastructure Specialist

Working from Chicago for more than ten years, I have studied how websites grade the IP addresses that reach them, and big retail sites grade harder than most. A price checker that arrives from a hosting network, asks too fast or hops between cities tends to get a block page or another region's price. So I rank these sellers on published evidence of what reaches a real product page, and on what each correct check costs.

None of these plans was bought for this guide, and I ran no tests of my own. On November 13, 2026, I read every seller's pages, price lists and terms, along with Proxyway's Amazon test, HTTP Archive's page-weight data and the retailers' own terms of use. Where a seller's pages disagree, as HighProxies' three price lists do, I show each version so you can check before paying.

The 5 Best Proxies for Price Monitoring at a Glance

Each pick fits a different kind of price tracker. Find your job in the middle column, then weigh the limit beside it.

Oxylabs is the default for Amazon-class stores, and each of the other four gives up speed, ZIP reach or test evidence for a lower or flatter bill.

We ranked in two steps. First, we dropped any seller whose homepage, menus or footer, or any sales page one click from them, pitches ban-free multiple accounts, Craigslist posting, or sneaker and ticket bots. That bar is stricter than in some of our older rankings, because price checks on marketplaces sit close to seller-account abuse. Second, we ordered the three sellers with a Proxyway Amazon result by residential success. Databay and HighProxies have no comparable test, so they follow, placed by how well their plans fit price checks.

Three things matter here that a general scraping list skips: ZIP-level location filters, sticky sessions that hold one store context, and traffic that lasts between check cycles. Those set the order of the last two picks and shape every pick's limits.

The 5 Picks Reviewed: Where Each Wins and Falls Short

Each review covers what the seller offers for price checks, its prices as of November 2026, and the catch. Claims a seller makes about itself are marked as its own, and every test number is Proxyway's.

1. Oxylabs: Best Overall for Amazon and Large Retailers

Oxylabs had the highest Amazon success of any vetted seller in Proxyway's US test: 90.78% on residential IPs and 91.06% on shared datacenter IPs. Its price-monitoring page recommends datacenter proxies, a scraper API, product datasets and residential proxies, in that order. Its docs say residential IPs rotate with every request by default, and a sticky session can last up to 24 hours.

ZIP targeting costs nothing extra on any plan, though the docs accept only five-digit US ZIP codes. Residential traffic costs $6 per GB on the $15 Starter plan and falls to $2.50 per GB above 1,000 GB, as of November 2026. Its Web Scraper API returns parsed JSON for Amazon, Walmart, Target and Best Buy product pages, from $0.50 per 1,000 Amazon results, while eBay pages come back as raw HTML.

The catches are paperwork and refunds. Every customer answers a KYC questionnaire, and Oxylabs says "Only 75% of customers are approved." Self-service purchases cannot be refunded, says its help center, while its terms, last updated October 8, 2025, still describe a three-day refund for pay-as-you-go. Proxyway also notes that some filters cannot be combined, such as country and ASN.

Best for: large US retailers where a missed check costs more than the traffic, and teams that would rather receive parsed prices than raw pages.

2. SOAX: Best for City and ISP-Level Price Checks

SOAX scored 88.57% on Amazon with residential IPs and 86.50% with datacenter IPs in Proxyway's test, though its pricing page lists only residential and mobile traffic. In Proxyway's general US test from April 2026, its residential pool connected on 99.92% of requests, the best US figure in that study. Its help center lists Amazon, Walmart and eBay among allowed marketplaces, while banking and payment sites are blocked.

Rotation can happen per request, after a set number of requests, after a set time or on error. Its help center sets sticky sessions at 10 seconds to 60 minutes. One rate covers residential and mobile traffic: $5 per GB on the fee-free Sandbox, or $3 per GB on the $200 Builder plan, as of November 2026. Every plan includes filters for city, region and ISP.

SOAX keeps ZIP and ASN filters for its $1,500 Scale plan and above, which puts ZIP-level checks out of reach for small teams. Credits added on the Sandbox or a monthly plan lapse after 60 days, and SOAX's terms call plan fees and credits non-refundable. Its KYC policy makes identity checks a condition of buying, and its help center caps each package at 1,000 requests per second unless Support raises it.

Best for: regional price checks by city or ISP across many markets, for teams that use their monthly credits within two months.

3. Rayobyte: Best Value for High-Volume Price Checks

Rayobyte scored 86.93% on Amazon with residential IPs, but its 4.70-second response time was the slowest of the eight residential pools Proxyway tested there. Its price-tracking page promises proxies "that show prices the way shoppers see them", with country, city, ZIP code or ASN targeting.

Pay-as-you-go Premium Residential starts at $3.50 per GB and drops to $2 at 50 GB, $1.50 at 250 GB and $0.70 at 1,000 GB, as of November 2026. Every tier includes ZIP and ASN filters, sticky sessions of 1 to 120 minutes and unlimited concurrency. A separate Scale Residential plan gives 6,600 GB a month for $100 after a compliance review, with no location targeting at all.

Its Scraping API returns raw HTML at $1.80 per 1,000 requests, with 5,000 free and no charge for failed requests, but it does not parse prices into fields. Rayobyte blocks banks, government sites and login pages for every customer, so it cannot reach prices behind a B2B login. Its KYC page says residential buyers may be asked for a passport.

Best for: large catalogs that need ZIP-level prices at a low rate per GB, where speed matters less than cost.

4. Databay: Best Pay-As-You-Go Option for Small Catalogs

Databay has no Proxyway Amazon result, so it ranks on fit rather than test data. Its Premium Residential 5 GB pack costs $13.75, or $2.75 per GB, and stays valid for 186 days, as of November 2026. That suits weekly or monthly checks of a few hundred products, where traffic on a monthly plan could expire unused.

Larger packs drop to $0.90 per GB at 1 TB but last 31 days. Its pricing page offers "One country, state, city, ZIP, coordinate, or ASN selector at a time", yet its US location page lists no ZIP control. Sticky sessions can be requested for up to 120 minutes. Rotation happens on a new connection, not on each request, and Databay does not promise a fresh IP every time.

Databay's price-monitoring page reads like an operating manual. It treats a 401, 403, CAPTCHA or login wall as a reason to stop and review. It also says: "Do not rotate an exit, alter headers, swap accounts, or increase concurrency after 429." Its acceptable use policy bans bulk creation of fake accounts, and its social media page rules out ban or suspension evasion.

Best for: small or occasional price checks where traffic must last for months, run by teams that want clear rules on when to stop.

5. HighProxies: Best for Fixed Datacenter IPs on Lightly Protected Stores

HighProxies rents static, dedicated IPv4 datacenter addresses by the month and sells no residential traffic. Its terms name HPRO GROUP LLC, a Delaware company, but give no street address or governing law. Its price aggregation page promises unlimited bandwidth on listed plans and says the proxies "are intended for lawful business use and public web research." US exits sit in cities such as Los Angeles, Phoenix, New York and Miami.

Its own pages disagree on price as of November 2026. One private IP costs $1.84 a month, its USA page says $2.56, and its price aggregation page charges $2.88 each in a five-IP pack. There is no rotation, no state or ZIP targeting and no trial. Its refund policy excludes blocks, CAPTCHAs and rate limits set by a target site, and HighProxies has no Proxyway Amazon result.

Best for: mid-size stores, supplier price lists and feeds that accept server IPs, where a flat monthly price beats paying per GB.

Amazon Test Results: How the Picks Performed

Proxyway ran its Amazon test from a US server through US proxies, sending over 5,000 requests across three runs at one request per second. These are its results for the three vetted sellers it covered, beside each pool's score in Proxyway's general US test.

The gap between the last column and the rest is the point. Pools that connected on nearly every request in the general test landed between 86.93% and 90.78% on Amazon. Reaching a server is easy; getting the right Amazon page back is not. That is why Proxyway checked the response code, page size and title rather than counting any reply.

Datacenter IPs also held their own. Oxylabs' shared datacenter pool edged its residential pool on Amazon, 91.06% to 90.78%, although some seller guides warn that Amazon blocks datacenter IPs quickly. Trying the cheaper option first, at a polite rate, can save residential prices for the stores that need them.

Read these numbers as a guide, not a guarantee. The ranking does not say when its main test ran, though the research behind it was collected mostly in March and April 2026. Vendors saw Proxyway's method in advance, and Proxyway's own report warns that real-target tests have "too many variables" to be reliable on their own. Your pages, request rate and parser will move these figures.

Which Proxy Type Fits Which Store

The right proxy depends on two things: how hard a store screens automated visits, and whether its prices change by location. Match the proxy to the store, not to the biggest pool you can buy.

• → Amazon, Walmart, Target, Best Buy and eBay: plan on a residential pool with one sticky session per product run, but test shared datacenter IPs first, given Proxyway's Amazon figures. Amazon, Walmart and Target also tie some offers or prices to a delivery address or chosen store, so budget for state or ZIP targeting.
• → Mid-size stores, including many Shopify shops: start with datacenter IPs at a polite rate. If block pages or CAPTCHAs appear, stop and review your rate and the store's terms before you try residential IPs. Our guide to why stores refuse cloud server IPs explains the filtering from the store's side.
• → B2B portals and supplier price lists behind a login: a static ISP or dedicated datacenter IP keeps one address for each signed-in session. Logged-in collection carries more legal risk, covered in the legal section, and Rayobyte blocks login pages outright.
• → Price feeds and official APIs: usually no proxy at all, or one fixed IP that the provider can allowlist.
• → Travel fares and market research across countries: country-level targeting, with one sticky session per search so each quote comes from a single, consistent location.
• → Mobile proxies: rarely needed for price checks. Proxyway's 2026 research found that mobile proxies, at their best, succeeded 5% more often than residential ones on real targets, and at their worst performed the same. As of November 2026, Oxylabs lists mobile traffic at $7.50 down to $3.50 per GB, though SOAX bills mobile at its residential rate.

When in doubt, send a small paid batch through two proxy types against your real product pages. Compare the share of correct pages, not the share of replies.

Getting the Price a Local Shopper Sees

Location changes what a shopper sees, though often through the delivery address rather than the IP. Amazon's help pages say product pages "filter out offers that can't be shipped to your delivery address", and some sellers' Prime eligibility depends on the shipping address. Amazon's seller API docs resolve delivery offers from "a US ZIP Code or US IP address", so both signals count.

Walmart's terms of use, updated September 9, 2026, say "prices may vary between stores", so the price you see can depend on the store you pick. Target says Circle Deals pricing "may vary by store location." Research points the same way: a 2012 HotNets study by Mikians and colleagues checked 29 Staples products across 200 Massachusetts ZIP codes, and 15 varied by up to 11%.

The practical lesson is that the IP is one input among several. A saved ZIP, a chosen store and the session's cookies can all override it. An IP's city is only an estimate, as our explainer on how IP geolocation guesses a town shows. For how precise state, city and ZIP filters are, see our guide to US proxy targeting. Then build each check like this:

1. Pick the widest exit area that still matches how the store prices, and narrow to ZIP only where the offer changes by delivery area.
2. Set the delivery ZIP or store inside the site, the way a shopper would, and keep its cookies for the run.
3. Hold one sticky session per product run, so the IP, cookies and ZIP stay together.
4. Confirm the product before the price: match the ASIN, SKU or GTIN, then the seller, condition and pack size.
5. Record the item price, shipping and any tax line separately. Amazon displays an "Estimated Tax" at checkout, and the rate depends on where the order is delivered to or shipped from.
6. Log page size and title with every check, as Proxyway did, and review any price far outside its usual range before acting on it.

Before the first run, use the self-checks near the end to confirm which state and network each exit shows.

What Price Monitoring Costs: Proxy Traffic vs Scraper APIs

How much do proxies cost for price checks? The answer turns on three things: the rate per GB or per IP, the weight of each check, and how many checks fail and repeat. These are the list prices for the five picks as of November 2026, before tax.

Rayobyte wins on volume rates and Databay on how long a small pack lasts, while SOAX puts ZIP-level checks furthest out of reach. Per-GB rates mean little until you know the weight of each check. HTTP Archive's Web Almanac, published January 15, 2026, puts the median HTML document at about 35 KB. Its median desktop inner page weighs 1,963 KB fully loaded, from a July 2025 crawl. A plain HTTP client, such as Python's Requests or HTTPX, downloads only the HTML, while a headless browser pulls every image and script.

Multiplying those sizes by Rayobyte's and Oxylabs' entry rates gives a rough cost per 1,000 checks. The scraper API rows use each seller's own per-request price.

Three cautions apply. Your product pages may weigh far more than the web median, and every extra 100 KB per check adds about $0.35 to $0.60 per 1,000 checks at these rates. Log response sizes on your own targets for a day before you budget. Per-GB bills also count traffic that returns nothing useful: SOAX's pricing page says it counts "partial responses, retries, and interrupted connections." And an HTML-only fetch misses any price a store fills in with JavaScript.

Take a store tracking 5,000 products twice a day, or about 300,000 checks a month. HTML-only checks at the median size come to roughly 10.5 GB, about $37 at Rayobyte's entry rate. Full browser loads come to roughly 589 GB, which lands in Rayobyte's $1.50 tier for about $883. Its Scale Residential plan covers that volume for $100 a month, but with no location targeting and only after a compliance review. Rayobyte's Scraping API would handle the same checks for about $540, with failures free.

Billing rules differ as much as rates. Rayobyte's API charges nothing for a failed request, while Oxylabs' API bills any 2xx or 4xx result but not 429, 5xx or 6xx errors. Because scraper APIs fix the price of each check, they suit heavy pages. Raw proxy traffic wins on light pages fetched as HTML.

Official Price APIs Worth Checking First

Before paying for proxies, check whether a marketplace offers the data through an API you are allowed to use. Each comes with eligibility rules and rate limits, and none covers every competitor.

• → Amazon Creators API: Amazon has deprecated its Product Advertising API 5.0, whose documentation redirected to the Creators API when we checked in November 2026. Access requires Amazon Associates membership and "at least 10 qualifying sales within the past 30 days". New accounts start at one request per second and 8,640 a day. Its GetItems call can return an OffersV2 price field, which "Returns offer buying price of a product," plus the seller and Buy Box status.
• → Amazon Selling Partner API: registered sellers can call getItemOffersBatch, which "Returns the lowest priced offers for a batch of items based on ASIN". Its default rate is 0.1 requests per second.
• → Walmart Affiliate API: its items endpoint returns "real time item status including price and availability". It asks for a Walmart.com account and an uploaded public key, and its item calls take an Impact Radius publisher ID.
• → eBay: its robots.txt says approved enterprise integrations "must use our official API", and its User Agreement allows automated access only with eBay's prior express permission.

An API price is the one the marketplace chooses to share, under terms you have accepted. For your own listings and a known set of rivals, that is often enough, and it removes the proxy question entirely.

Is Price Monitoring Legal? Retailer Terms, robots.txt and US Rulings

Most big US retailers forbid automated price collection in their terms. Amazon's Conditions of Use, updated August 14, 2026, exclude from its license "any collection and use of any product listings, descriptions, or prices". The same clause excludes "any use of data mining, robots, or similar data gathering and extraction tools."

The same page adds rules for automated agents. An agent must name itself in its user agent string as "Agent/[agent name]" and must not complete or get around CAPTCHAs. Rotating residential IPs to slip past blocks sits badly with those rules.

Walmart's same terms of use bar scraping without Walmart's "express prior written consent" and repeat Amazon's wording on collecting prices. The eBay User Agreement, effective June 28, 2026, allows robots and scrapers only "with the prior express permission of eBay." Target and Best Buy ban scraping tools too, and Best Buy's terms of September 25, 2026 require digital agents to identify themselves.

A robots.txt file does not settle the question either way. RFC 9309, the robots exclusion standard, says its rules "are not a form of access authorization." Walmart's robots.txt leaves product pages open to crawlers, yet its terms still forbid automated price collection.

US courts have narrowed one risk and left others. In hiQ v. LinkedIn, the Ninth Circuit upheld a preliminary injunction on April 18, 2022. It found that scraping public profiles is likely not access "without authorization" under the Computer Fraud and Abuse Act. Later that year, a district court found LinkedIn's user agreement enforceable against hiQ, and hiQ agreed to a $500,000 judgment.

In Meta v. Bright Data, a federal judge ruled on January 23, 2024 that logged-off scraping of public data did not breach Meta's terms, which bind account holders. For price monitoring, public and logged-out pages carry less contract risk than anything behind a login, but terms, trespass and copyright claims remain. This is not legal advice, so check with counsel before collecting at scale. These habits lower the risk:

• → Name your crawler. Put a clear name in the user agent string, as Amazon's agent rules require, and add a contact address.
• → Back off on HTTP 429. RFC 6585 says a 429 response "MAY include a Retry-After header" stating how long to wait. Honor it.
• → Stop on 401, 403, CAPTCHAs and login walls. Review the target instead of rotating to a fresh IP.
• → Match frequency to the market. Check a product as often as its price moves, not as often as your plan allows.
• → Collect prices and stock, not people. Leave shopper reviews and seller contact details out of the dataset.

One of our picks puts it plainly in its own compliance guide: "A proxy changes network origin; it does not grant authorization." That line, from Databay, is the right frame for every tool in this guide.

Sellers We Left Out, Including Squid Proxies and Bright Data

Google's AI summary for this search named Squid Proxies and Bright Data when we checked on November 13, 2026. Squid passes our vetting rule but misses the top five on fit and evidence, with no Proxyway Amazon result. The only Amazon figures we found for Squid come from ProxyVero, which showed 79.4% success over 282 requests from October 23 to November 12, 2026. That site names no operator and says it may earn commission from partner links.

Google's summary also credits Squid with leading independent speed and reliability indexes. The index on Squid's homepage badge, ProxyPerf, names no operator. On November 13, 2026, it ranked Squid first for speed but second of 13 for residential reliability and sixth of 10 for datacenter reliability. Squid's residential plans rotate every five minutes and list no location targeting, and its terms name no legal company or street address.

In Squid's favor, its datacenter plans run from $1.50 down to $0.80 per IP a month with unlimited bandwidth, as of November 2026. Its terms also offer a seven-day money-back guarantee on a first purchase. HighProxies still gets our datacenter slot, because its terms name a company and its pages list US exit cities, while Squid's datacenter page names no US city.

The sellers below fail our vetting rule on pages read the same day, except NetNut, which is out for a separate reason:

• → Bright Data: its datacenter page calls dedicated IPs "best for managing multiple accounts or social media profiles" and promises that several seller profiles can run without being blocked. It also sat out Proxyway's 2026 research, so it has no comparable Amazon figure.
• → Decodo, called Smartproxy until April 2025: Proxyway's runner-up pick for Amazon, at 89.98% on residential IPs. Its Craigslist proxies page, though, says "Post multiple ads on Craigslist without getting flagged."
• → Byteful: 87.72% on Amazon, yet the Index page in its footer offers Craigslist proxies "for ad posting", and the Craigslist page itself pitches "multi-account management".
• → Evomi: first in Proxyway's Amazon table at 99.70%, but for its Core pool tested in July 2026, a different window from the rest. The use-case directory in its footer lists proxy pages for sneaker bots such as Cybersole, along with Ticketmaster and Craigslist pages.
• → Webshare and IPRoyal: each sells proxies for multiple accounts run "without triggering bans". Webshare also scored the lowest residential result in Proxyway's Amazon table, 63.88%.
• → DataImpulse: the use-case index in its main menu lists mobile proxies for "Sneaker/ticket bots" and carries a sneaker proxies card.
• → NetNut: the FBI seized hundreds of domains tied to NetNut, KrebsOnSecurity reported on July 2, 2026. Its parent company, Alarum Technologies, had rejected researchers' botnet findings in June and pledged to cooperate with law enforcement after the seizure.

One more check before you pay any seller: look for a legal company name, an address and a governing law in its terms. The seller ranked first in Google for this search on November 13, 2026 names none of the three in its terms. Its brand also echoes Decodo's former name, Smartproxy.

Check Your Price-Monitoring Proxies Yourself: Four Tests

Run these on a sample of exit IPs before you scale. Copy each exit from your proxy logs or dashboard and paste it into the tools directly. Some sellers block IP-checking sites, and Oxylabs lists them among restricted targets on its residential network.

One clean sample shows one moment. Residential pools change hour to hour, so repeat the checks whenever success rates drop or prices start to look odd.

Our Verdict on the Best Proxies for Price Monitoring

Oxylabs is the strongest first choice among proxies for price monitoring on Amazon and other big US retailers. It pairs the best Amazon result of our tested picks with free US ZIP targeting and a scraper API that returns parsed prices. SOAX fits city and ISP checks for teams that use their credits quickly, and Rayobyte is the value pick for large catalogs that need ZIP-level prices.

Databay suits small catalogs on a slow schedule, and HighProxies suits stores that accept server IPs. Whichever you choose, test datacenter IPs before paying residential rates, set the delivery ZIP inside the store, and weigh an official API or a scraper API before raw traffic. If your checks rotate IPs per request, our rotating proxy session comparison helps you pick a pool. For other scraping jobs, see our ranking of scraping proxy sellers.

Sellers revise prices and terms often, and ours date from November 13, 2026. Start on the smallest plan, test a handful of exits with the IP lookup and the ASN lookup, and budget from the share of correct pages you measure yourself.