Well I have not had any major problems with e-bay,, bar for muppets that can not read,,
e.g. a bloke in California who somehow expects to pay the uk price on shipping a pair of shocks !! and got well tinkle when I would not send them the other side of the world for seven quid !!
and a bloke who was selling a tomb raider,, I had the top bid at auction end, meeting the reserve, he then sell to a underbidder for what I presume is a better offer (have proof),, but ok ,,money is money, so fair enought,,, but then the git leave neg feedback and claims a listing refund !! and e bay could not care less
So , to my knowledge, have not been shafted as yet, after 4 years or so,
If you use a bit of nouse and common, and work on if its too cheap then there is a reason why,,,,,,,,,,,,, You get what you pay for