Well, a month ago was my last use for about a year. A user with a 96% positive feedback and definitely a lot of sales slow played and then issued a fake UPS tracking number. The negatives in their history sounded mostly like communication issues so I assumed they were okay. They sell a lot of things in the $30-$90 range, this was a $200 item they had listed for $145, and they supposedly had a couple of them. A local store ran a sale around the same time that has it at $150 so it wasn't crazy. Upon deeper inspection of their reputation once things got fishy, they have 150+ sales, 4 negatives, 1 neutral. There are real looking positive feedbacks but about half are automated positive feedbacks. Not sure entirely what that means.
A refund has been granted but ebay's computers show that someone in my zipcode has also recieved a package (mine should have been 20lbs, the one sent was 2lbs and received by someone with a different name) so I'm kind of expecting a little more drama before it's all said and done. To be fully transparent, it was marked shipped without tracking and has an estimated arrival date of 10 days; after 10 days I asked if it had shipped and was told no and offered a refund and then it became marked shipped with a fake tracking number and "was delivered." The short of it is they're a somewhat prolific seller, I can't think of any reason it issue a fake tracking number and they had my money for about a month. I'm getting the money back but I'm back to square one. The sale at the local store ended.. It's not that big of a deal, just annoying.
It seems like there are sort of 2 classifications of bad experiences. There are poor descriptions, slow transactions, shipping mix-ups, mis-communications and things of that nature. A reputation ding is probably appropriate. Then there are more fraudulent things and ebay has chosen to not really punish those things and let them go, same way Amazon will gladly list and sell fake goods.