sadly...
I use ebay/PayPal because it's safer for me, as a buyer.
I've bought stuff that's not turned up and the buyer disappeared, and I got my money back fairly quickly (within a month) of raising a dispute.
I've also used ebid where I was scammed for £60 and was told by ebid to "contact the credit card company for a refund" and "contact the police" and that was all they were prepared to do.
Credit card company paid up, grudgingly, three months later. The police said it was a "civil matter" and told me to go forth.
ebay/Paypal is as successful as it is because of the backup they have when things go wrong. It there's another service out there with the same safety net, they need to do some advertising.
Tux - cos I think he's cool and no other reason.