Funny, talk to sellers who use eBay and they will say how it's all stacked against them and that eBay accepts disputes from buyers almost unconditionally and they have no recourse and how much abuse there is by buyers who claim they received damaged goods or the wrong item.

Both can be true.

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.