Amazon's search results push down the best deals on the platform and promote results from more expensive, lower-quality items whose sellers have paid a fortune for an "ad" (not really an ad, but rather the top spot in search listings):
This is "Amazon's pricing paradox." Amazon can claim that it offers low-priced, high-quality goods on the platform, but it makes $38b/year pushing those good deals way, way down in its search results.