An excerpt from: https://pluralistic.net/2023/04/25/greedflation/ Amazon binds its sellers over to something called Most Favored Nation status. That means that sellers can't offer their goods more cheaply than they do on Amazon – even if it costs them (lots) less to sell in Target or direct from their websites. This means that every time a seller adds a dollar to their Amazon sale price, they have to add a dollar to…
According to the FTC's lawsuit, Amazon no longer binds its sellers with a Most Favored Nation clause. Instead, Amazon now will refuse to promote an offer in its "buy box" space if it detects a lower price for that good on another website. The FTC alleges that this simply reconstitutes the MFA since most sales on Amazon take place from the buy box. Amazon responds that it is within its rights to not promote uncompetit…
Amazon scours the web to make sure their products are competitively priced. So if a Western Digital external hard drive is $99 on NewEgg, then Amazon wants to sell it for $99 or lower. If it's a 1P product (i.e., Amazon is the seller), they can easily price match in real time. But if it is a 3P (third party seller) product then Amazon cannot take that action unilaterally take that action since it is the seller setting the price. So the best they can do to protect their customer in real time when their crawlers detect a lower price elsewhere is to hide the buy box behind the "see all buying options" button.
I'm sure when this feature was rolled out, Amazon's sales must have dropped. They are taking that short term hit in order to protect customer trust in the long term.