How often can I check a page?

As often as your schedule and the target's terms allow — we do not meter requests, only bandwidth. In practice the limit is what the site considers reasonable, and spreading checks across a rotating pool is what keeps a frequent cadence from concentrating on one address.

Does a monitoring run need residential IPs?

Usually not. Most change monitoring is plain HTML and runs well on ARC Basic, our rotating ISP pool, at the lowest price per GB we sell. Move a specific target to ARC Fast when the page differs for a consumer IP or when you see failures on it you cannot explain.

Can I watch the same page from several countries at once?

Yes — that is what the _country- token in the username is for. Run the same check with a different country value per schedule and diff them against each other as well as against their own history; a change that appears in one market first is usually the interesting one.

How do I keep a paginated review set on one IP?

Give the pass a session handle. The same _session- value returns the same exit for the minutes set in _sesstime-, so the sort order and the pagination stay consistent from the first page to the last.

Use case · Reviews & changes

Proxies for review and website change monitoring

Reviews, terms pages, stock levels and landing pages change without announcement, and often only in one market. Check them on a schedule from the country each page is written for, and catch the change on the run it happens.

Get started See pricing

Pay per GB · No subscription · Prices in EUR, excl. VAT

Illustration. The URLs and values are fictional; the connection string is the real grammar.

€0.75
per GB on ARC Basic, excl. VAT: −21%
at 1 TB (€0.59 / GB): 185+
countries, city targeting: Never
expires — no subscription

The problem

What goes wrong without the right IPs

The page you are diffing is the wrong one

A monitored URL that geo-redirects returns your region's version every run. The diff stays clean while the page you meant to watch changes underneath it.

Frequent checks look like a bot from one address

Hourly polling of the same URLs from one IP is the clearest possible pattern. Spreading checks across a pool keeps a monitoring cadence from becoming a rate-limit problem.

Review sets are personalised and paginated

Sort order, featured reviews and translation default to the visitor's region, and pagination often carries state. One exit per pass keeps a set coherent; a changing exit re-sorts it under you.

A missed window is a missed change

If a run is throttled and skips a cycle, a price that moved and moved back is simply invisible. There is no backfill for a page that no longer says what it said.

Monitoring is small but constant

A few kilobytes per check, thousands of times a day, for years. Per-request pricing punishes exactly this shape; per-gigabyte pricing barely notices it.

Setup

Recommended setup

Monitoring is the cheapest workload we serve — small pages, high frequency. Stay on the cheapest pool that the target accepts.

Plan	Role	Session	Targeting	Price
ARC Basic Rotating ISP	Default for scheduled checks Our lowest price per GB, and a change check is usually a few kilobytes of HTML. This is where a monitoring fleet belongs unless a specific target argues otherwise.	Rotating	Country, optional city	€0.75 / GB €0.59 at 1 TB (−21%)
ARC Fast Rotating residential	For review platforms and rendered pages Residential exits where a consumer IP changes what is shown, with a sticky handle so a paginated review set is collected as one visit.	Sticky, 10 minutes per pass	Country + city	€2.00 / GB €1.12 at 1 TB (−44%)

Prices are list prices in EUR, excl. VAT. Volume discounts apply automatically at checkout — full ladder on the pricing page.

Illustration

What 1,000 URLs checked hourly costs

An illustration with round numbers — your pages, payloads and retry rate will differ. The arithmetic is the real price ladder.

Assumptions

URLs monitored: 1,000
Checks per URL: 24 a day
Page weight: 80 KB of HTML, assets blocked
Pool: ARC Basic, rotating
Bandwidth per month: ≈ 58 GB

On ARC Basic

€42.34per month, excl. VAT

58 GB bought in one purchase at €0.73 / GB (−3% volume rung, applied automatically).

The same 58 GB on ARC Fast: €97.44 at €1.68 / GB. Route only the jobs that need it through the pricier pool.

Conditional requests cut this further: if the target honours ETag or If-Modified-Since, an unchanged page costs a header exchange rather than a body.

Bandwidth never expires, so a bigger single purchase is only ever cheaper per GB. See the ladder.

Works with anything that takes a proxy URL

changedetection.io
Python requests / httpx
n8n
Playwright
curl
Docker

FAQ

Questions

Something not covered? Write to contact@arcproxies.io.

Get started

Buy a gigabyte and try it on your own targets.

No subscription, no sales call. Code WELCOME15 takes 15% off your first purchase, and whatever you do not use is still there next quarter.

Create your account Questions first? contact@arcproxies.io

Price monitoring

See the price a shopper in Berlin, Lyon or Chicago sees. ISP bandwidth at our lowest price per GB for HTML checks, residential where a marketplace is strict.

Brand protection

Find counterfeit listings, unauthorised resellers and minimum-advertised-price violations that are only shown to consumer IPs in a given region.

Travel fares

Airline, hotel and rail fares change with the point of sale. Query each market from an IP inside it so the fare you store is the fare a traveller is quoted.

Web scraping

A second provider that just works — Scrapy, requests, Crawlee or Playwright, self-serve, no sales call, bandwidth that never expires.