why has no one corrected him on buying his own item? you manage your account through your battle.net account. d3 opens it for you when you hit the button at the top of the rmah interface. you press the cash out button to send your money from your blizzard account to paypal, wether you send it manually or set your sale to go right to your paypal account, paypal takes a modest nip at your money- 2.9% plus thirty cents. $250 *2.9% +$.30= $7.55, which is reasonable if you save it up and cash out in one go, but if you have every little thing going sraight from the rmah to paypal, those little thirty cent nips will add up quick, to $10.25. not backbreaking, but easily avoided.
Except you need a second account or a trust-worthy friend. For me it's a non-issue since my brother will play too, but for some it may require buying a different copy of the game and possibly opening up a 2nd paypal account.