Comment by Panzer04

This is a good point.

A big part of the drive towards lower prices is likely driven by companies exploiting that lack of information to deliver a low-quality product for a high price. Consumers rationally respond to this by just always picking the low-price product

Unless, of course, there's another factor (such as brand) that assures users they are receiving something worth spending extra on (and of course it's oh so easy for companies with such a reputation to temporarily juice returns if they are willing to make sacrifices)