I've bought and sold countless stuff on Ebay, from around $10 to a few big ticket items, 3 motorcycles, etc.
Feedback is one thing. For small purchases ($200?) Ebay provides insurance.
I've used Escrow.com 4 times for expensive items; it rocks and if the seller says no you definitely want to stay away.
Sometimes I just ask and if they accept Escrow I figure I don't need it.
