What I'm suggesting is that when the buyer confirms the account send a automated message to the private conversation that the account has been secured and your payment will be delivered as soon as possible or use something like a link to a bring the buyer to a page that asks if every thing that was described is on the account. Did they have any problems logging on to the account and after confirming this, the automated system sends the payment through a behind the scenes programming! Suggesting this for Sellers who don't want to wait 3 days for their payment while the buyer has had the account for 3 days.
Already working on this: Approved and Implemented - Payment Delivery | PlayerUp Accounts Marketplace. Player 2 Player Secure Platform.