Err...this sounds a little complex to me - Im just a simple minded guy....what if the seller needs the cash he gets from the sale, to ship the item???
Anyhow, I think anything you all come up with will be cool. The paypal thing could be sorta a pain in the arse with the extra fee's if you know what I mean...I say since Rub came up with the Idea...make him the Monopoly Banker and he can deal with all the little transaction issues...Im sure he would love to assist...lmao