I've used eBay plenty, and I've had general success in all of my transactions thus far, until now.
After last week's Burnout bombastica I decided to go out and hunt down a copy of Burnout Revenge for the 360, and ended up winning an auction on eBay for $12. The auction closed Sunday.
On Tuesday, I contacted the seller, asking why I still hadn't received any shipping confirmation. He replied later that night saying that he had just gotten back from off-shore, and would ship it tomorrow [Wednesday].
Fast forward to right now, and I still have not received any information on a product that was supposed to have arrived by today. When do I complain about this? Seems like a pretty shitty transaction so far.