I have highly sought after expensive single items that are selling multiple times. Once an item sells, it is removed from the database by the PayPal IPN Handler immediately. However, occasionally the item will sell a second or third time. I am suspecting that multiple buyers are adding the item to their PayPal cart, but some are delaying completing the transaction until later. Is there a way to cause items in a PayPal cart to expire is not acted upon within a reasonable period of time? Can anyone suggest another solution?