Overpayment on Items for Sale
If you list an item for sale online such as a car or electronic equipment, a buyer might contact you, asking you to ship them the item, then quickly send a check for hundreds more than the asking price. This overpayment is allegedly to cover the shipping costs and other fees.
A few days after you deposit the check into the bank, it turns out that the check or money order was a fake. If you have already shipped the item, this means the item is lost, as well as the money you spent to ship it.
To guard against this scam, never under any circumstances ship an item before the payment has cleared.