eBay have got funny(peculiar) rules regarding the selling of electronic/virtual type media like this - don't expect any joy from them, and I suppose PayPal either as they're the same lot!!
My son tried to sell a Habbo Hotel character and items via a password sale - ebay pulled the auction twice before he sold it by slipping under the radar and organising it off-ebay, but with a bidder from the pulled auction. But, I was hovering over his shoulder waiting for funds to clear before the password was sent

Doug