Most sales require a guaranteed method of payment such as money order, certified check or cash. Credit cards are sometimes accepted. If it's your first time buying from the government, attend several sales beforehand to learn about the process. Most of the items for sale will probably be used, so inspect the property carefully before buying it. Online auctions for all types of items are growing in popularity.
Sellers list their goods, and auctions are conducted using e-mail to send and receive bids.
If you're the highest bidder, the seller will contact you via e-mail to arrange for payment and delivery. If you don't get the merchandise, you can challenge the charges with your credit card issuer. Verify the seller's identity and check on their reputation. If you can't, consider this a red flag and avoid doing business with the seller. Some sellers may use a forged e-mail header, making it impossible to contact them if you need to.