Residential Basic from $0.80/GB · datacenter from $0.50/GB · city targeting in 200+ countries
Proxies for price monitoring let a tracker request the same product page from many locations and many IPs on a schedule, so it records the price a real shopper sees rather than a blocked page or a default region. Quantum Proxies' rotating Residential Basic from $0.80/GB covers 200+ countries with city targeting; datacenter from $0.50/GB handles shops that do not block automation.
Retailers and marketplaces price by market. The same SKU can carry a different number on the German and the French storefront, a different shipping promise by postcode, a member price behind a login, a mobile-app price that the desktop site never shows, and a promotional price that only appears after the product is in the cart. Airlines, hotels and rental sites go further and adjust by currency and by the visitor's apparent country.
A monitor that always asks from one office IP therefore records one version of the truth, and after a few thousand requests from that address it may stop getting the page at all. Proxies fix both problems: residential IPs with country and city targeting show the local price, and rotation across the pool spreads the requests so each one looks like a separate shopper.
Bandwidth is the only variable cost, so size it before choosing a plan. Fix three numbers: how many product URLs you watch, how often you check each one, and the page size. A product page fetched as HTML only, without images and scripts, is roughly 60 KB, which makes 1 GB ≈ 1,000,000 KB ÷ 60 ≈ 16,000 pages, call it 15,000 to be safe. So 10,000 URLs checked once is roughly 0.6 GB, and monthly usage is that figure times the number of checks per month.
Daily checks of 10,000 URLs come to roughly 18 GB a month; every six hours roughly 72 GB; hourly roughly 430 GB. The table below turns those into plan prices. Two levers cut the number: fetch HTML only, and check fast-moving items hourly but the long tail daily. Heavier pages raise it, so measure a sample first.
For most shops the right choice is rotating Residential Basic: 90M+ household IPs in 200+ countries, city and ASN targeting, HTTP or SOCKS5, and a price from $1.00 per GB on the 25 GB plan down to $0.80 per GB at 1,000 GB, with 90–360 days of validity and no subscription. Every fetch can leave from a different IP, which is what a monitor wants when it reads thousands of independent pages.
Residential Premium sits above it at $2.20–$2.50 per GB for jobs that need state and ISP-level targeting, sticky sessions up to 120 minutes or unlimited concurrent connections. For a price tracker the Basic tier is usually enough; step up only for the specific targets that need the finer targeting or the longer session.
Not every store fights bots. Many independent shops, B2B catalogues, manufacturer price lists, comparison feeds and public APIs serve pages to anyone, and for those a datacenter proxy is the cheaper line: 1 Gbps+, rotating or dedicated IPs, country, state and city targeting in 100+ countries, and $0.80 per GB on the 50 GB plan falling to $0.50 per GB at 500 GB.
A sensible monitor splits its target list: datacenter for the shops that accept it, residential for the marketplaces and large retailers that do not. Because both are bought from the same wallet and configured the same way, moving a domain from one list to the other is a configuration change, and the test is simple: if the datacenter fetch returns the price reliably, keep it there.
Some prices only exist inside a session: a cart-level discount, a shipping cost calculated at checkout, a bundle price, a coupon applied to a basket, a member price after login. Checking those means several requests that the shop must attribute to one visitor. A rotating IP would break the session on the second request, so the monitor needs a sticky session for that step.
Residential Basic holds an IP from 3 minutes, Residential Premium up to 120 minutes and mobile up to 24 hours, all selected per request through the proxy username; a tracker can run rotating for listing pages and switch to sticky for the checkout step of the same product. Keep the flow to what a shopper would do, and never place an order you do not intend to complete.
Marketplaces are where geo matters most, because the same listing is sold by many sellers whose ranking, Buy Box and price differ by country. Rotating residential IPs targeted to the marketplace's country are the standard setup; for Amazon there is also a dedicated Amazon Scraper API at /scraper-api/collectors/amazon-scraper-api that returns price, rating, review count and availability as JSON if you would rather not parse HTML.
Shopify-hosted stores are usually lighter targets: the storefront is public and often a datacenter IP suffices, though large brands add protection, so test each domain. eBay listings and auction prices change by hour and by site (.com, .co.uk, .de), which is a case for country targeting plus a higher sampling frequency on the items that move.
If parsing and retries are not where you want to spend time, the Extract API at /extract-api fetches any product URL through the residential network and returns clean Markdown or JSON, with navigation and scripts stripped, so a price can be picked out with a simple rule. It is billed from the same wallet, and it pairs well with raw proxies for the targets where you need full control.
Whichever route you take, start with the 100 MB Residential Basic free trial, valid 5 days and unlocked by a one-time SMS verification, to measure real page sizes on your target list. Then buy the plan the table suggests, top up from $5 by card, PayPal or crypto when needed, and enable auto-recharge if the monitor must never pause.
| Check frequency | Checks per month | Monthly traffic (roughly) | Residential Basic | Datacenter |
|---|---|---|---|---|
| Daily | 30 | 30 × 0.6 GB ≈ 18 GB | 25 GB plan, $25 (≈ $18 at $1.00/GB) | 50 GB plan, $40 (≈ $14 at $0.80/GB) |
| Every 6 hours | 120 | 120 × 0.6 GB ≈ 72 GB | 100 GB plan, $100 (≈ $72 at $1.00/GB) | 100 GB plan, $70 (≈ $50 at $0.70/GB) |
| Hourly | 720 | 720 × 0.6 GB ≈ 430 GB | 500 GB plan, $450 (≈ $390 at $0.90/GB) | 500 GB plan, $250 (≈ $215 at $0.50/GB) |
| Every 15 minutes | 2,880 | 2,880 × 0.6 GB ≈ 1,730 GB | 2 × 1,000 GB plans, $1,600 (≈ $1,380 at $0.80/GB) | 2 × 1,000 GB plans, $1,000 (≈ $865 at $0.50/GB) |
Two reasons. Prices differ by the visitor's location, device and session, so a single office IP records only one version of them. And a tracker sending thousands of requests from one address is soon served a robot check or nothing at all. Residential proxies with country and city targeting show the local price, and rotation spreads the requests across 90M+ IPs.
Rotating Residential Basic is the default: real household IPs in 200+ countries with city targeting from $0.80 per GB, so each fetch looks like a separate local shopper. Use datacenter proxies from $0.50 per GB for shops that do not block automation, and a sticky residential session for cart or checkout prices. Most trackers run a split list.
A product page fetched as HTML only is roughly 60 KB, so 1 GB covers roughly 15,000–16,000 pages. Watching 10,000 URLs once is roughly 0.6 GB; daily checks are roughly 18 GB a month, hourly checks roughly 430 GB. On Residential Basic that is the 25 GB plan at $25 or the 500 GB plan at $450. Measure a sample of your own pages first.
Yes. Amazon and eBay are country-specific marketplaces, so target the marketplace's country in the proxy username and rotate through residential IPs; for Amazon the Amazon Scraper API can return price, rating and availability as JSON instead. Shopify storefronts are usually public and often work from datacenter IPs, though larger brands add protection, so test each domain.
Use a sticky session so the shop attributes every step to one visitor: Residential Basic holds an IP from 3 minutes, Residential Premium up to 120 minutes. Add the product, open the cart or the checkout page, read the price and shipping, then let the session expire. Keep to what a shopper would do and do not place orders you will not complete.
Spread requests across rotating residential IPs so no address carries an unusual request count, keep a fixed number of workers per domain with a short delay, fetch HTML only, and cache pages you already have. Protected targets belong on residential, open shops on datacenter. No proxy removes challenges entirely; sensible rates and the right IP type keep them rare.
Yes. New accounts get 100 MB of Residential Basic free for 5 days, one per person, unlocked by a one-time SMS verification in Settings → Free Trial, no card needed. At roughly 60 KB per page that is over a thousand product fetches, enough to measure real page sizes on your target list and choose a plan from the table above.
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