you want people to send you first and on top of that they pay you more you are new you have to learn that there is something here called escrow
I only accept PayPal and I don't think escrow will work with PayPal. Sellers will have to trust me.
why they will have to trust you with their console and the payment to return it ?
Also this is q crypto forum not q PayPal forums google forums escrow Bitcointalk you will find many escrow here that's can handle sales like that