This is a market for lemons.
As a market's trust lowers, buyers are less willing to pay a reasonable price for a square deal because of the probability being higher that it isn't. This, paradoxically, lowers the value of legitimate products from legitimate sellers because there's no way to differentiate. The risk adjusted value of the product lowers. Legitimate sellers leave. Things spiral. Everyone loses.
Trust is the real rare commodity.
It's always been bad but it's gotten worse and there's no recourse other than a dispute. I had a seller label a midi device a particular version (known to work with Linux and Mac) but when it arrived it was an older version that requires a proprietary Windows-only driver. I went back to the listing and the photos were of different versions. Seller refused the return. Ebay was unhelpful. Great.