A seller buyers a chip at a garage sale for $2. The chip happens to be a 1st edition Flamingo (Bugsy).

Now, now knowing anything about chips, he calls it a coin and sells it under a coin category in ebay.

3 deep pocket bidders spot it. Each would gladly pay $25k for the chip. The 3 get together and decide whose turn it is to bid. Unfortunately because the chip was placed in the wrong category very few people saw the auction. The sale price turns out to be only $100.

The seller is ecstatic. Using your logic, since the seller is happy to make $98 profit, he did not get screwed. In fact he should be happy. Then again I seem to recall that you don't approve of that practice. Could it be that you are pro-seller?