About 8 years ago I was working with a retailer who had started selling on Amazon. I don’t know if they still do this, but Amazon would detect if promotions fo

About 8 years ago I was working with a retailer who had started selling on Amazon. I don’t know if they still do this, but Amazon would detect if promotions for the products occurred on other sites. Amazon would instruct us to lower the prices to match or risk various penalties. I do not remember the exact penalties, but this article seems right. Amazon would also detect those prices fast. I always assumed they had their own web crawler that checked for it. I saw some retailers trying to obscure their non-Amazon promotions, to make them less detectable by the crawler. E.g. splitting “Discount” into individual <span>’s The page is skimpy on details but https://www.amazon.com/gp/help/customer/display.html?nodeId=G9EAYKPV5YYDB8P7 https://www.amazon.com/gp/help/customer/display.html?nodeId=... > We constantly compare Amazon's prices to our competitors' prices to make sure that our prices are as low or lower than all relevant competitors