eBay cheated me out of $70 with indifference and stupidity.
The short version is that I logged into eBAY, UPDATED MY MAILING ADDRESS, purchased an item, and they told me they would send it to an old address they had populated from elsewhere.
I immediately informed them, and eBay said, we don't care, tell the seller.
Their contact info for the seller was inaccurate, so I had to hunt them down. I found the seller and contacted them, and they said we don't care, we're going to mail it to this old address eBay supplied.
I contacted the post office, but they said the shipper had not made available any means to intercept or redirect the package, even if I paid extra.
The item was lost forever. eBay said the seller probably didn't see my message until after it was sent - but the seller replied to my message, which was sent within at most 20 minutes of seeing that eBay intended to ship my package to a wrong address rather than the one I had given them. They stole $70+ from me, and gave me nothing in return.
Please never, ever try to buy anything from eBay. You will regret it.