Apparently afraid of eventual legal issue that might develop, eBay has cancelled all auctions of virtual property.
The company has been pulling the auctions for the last month or so "For the overall health of the marketplace."
According to SlashDot: "Given the nebulous nature of ownership in online games, eBay has decided the prudent decision is to remove the possibility for players to sell what might be the IP of other parties via their service. Mr. Durzy made it a point to say that initial listings of virtual property would not have punitive actions. Their assumption, he said, is that most users break with policies because they're unaware of them, rather than maliciously. Initial infractions will result in a delisting of items, and an attempt to educate the user on the policy. Persistent disregard for the policies, of course, will result in a removal of the seller's account."
So if you want a level 70 paladin or whatever, you'll have to grind like everyone else.