Amazon shows the same product at a different price, with different stock and a different seller in each marketplace. For a seller this is the invisible half of the competition: who wins the Buy Box in which marketplace is something you can only see by looking with that marketplace's IP. Here a proxy is not a tool for hiding, but a tool for measurement.
Data That Differs by Marketplace
Green cells mean "changes noticeably by marketplace". Looking at a single marketplace and generalising is misleading.
Choosing the IP Type
Amazon uses fairly advanced bot detection on product pages. Datacenter IPs are quickly redirected to a "robot check" page. At production scale, residential proxy is practically mandatory; routing every request through residential, however, inflates the cost.
Compared with an all-residential approach, this flow typically halves GB consumption.
Request Rate and Pattern
What triggers blocking is most often not the total number of requests but its pattern: a few requests per second, always in the same order, with no pauses at all. A pattern that comes closer to human behaviour carries the same volume for far longer.
The total number of requests is the same in both runs. The difference is a random delay of 0.8–3 seconds between requests.
Region and Language Consistency
Accept-Languageheader should match the IP's country — a DE IP +tr-TRis an inconsistency that gets noticed.- Set the postal code cookie to match the target marketplace; shipping time and stock change accordingly.
- Use a separate session for each marketplace; do not mix cookies.
What Can and Cannot Be Collected?
Amazon's terms of use restrict automated access. Monitoring publicly available information such as price and stock for your own products and for competitive analysis is a common practice; collecting personal data such as customer information or reviewer identities, however, may be contrary both to those terms and to regulations such as KVKK and similar legislation. As you scale up, evaluate official partner programmes and API access.
For the complete price monitoring architecture, see our price comparison proxy page; for data collection infrastructure, see our web scraping proxy page. Before you use your addresses, Proxy Check test them with this tool.