Several times I have posted something for sale, someone contacts me and says they'll take an item. I send them my Paypal info and then 3+ hours or even overnight before they pay, if at all. Of course, before they pay, someone else writes and says they would like to buy it. If you sell it to buyer #2, they trash you for "selling it out from under them. When it takes likes 2 minutes to issue a Paypal payment, how long would you wait before moving on to the next buyer?