Tips for Avoiding Internet Auction Fraud: If possible, purchase items online using your credit card, because you can often dispute the charges if something goes wrong. Be cautious when dealing with sellers outside the United States. If a problem occurs with the auction transaction, it could be much more difficult to rectify. Ask the seller about when delivery can be expected and whether the merchandise is covered by a warranty or can be exchanged if there is a problem. Make sure there are no unexpected costs, including whether shipping and handling is included in the auction price. There should be no reason to give out your social security number or driver’s license number to the seller.