Problem with ply30 member
It's not always practical or even possible, but a seller can avoid a lot of problems by not transferring or using payment money until he is fairly certain the transaction has been completed. As a habit, after I ship something, I take note of the expected delivery date on the receipt. If I don't hear from the buyer within a day or two after that date, I'll go ahead and transfer that money over to my bank.
Takes some of the pain away from those unexpected surprises.