Because auction websites are typically configured to securely handle payments for goods, there is no need to provide any payment information to the seller directly. It's probably a scam if they demand that you send gift cards or a money order or ask for the details of your bank account, debit card, or credit card.

Most people who participate in online auctions believe that if they place the winning bid, the seller will give them what they paid for (94 percent). People who have mostly bought and sold on auction sites believe they will get what they paid for (99 percent).

They might require extensive repairs, be totaled, or have other problems. Even if they might sell, it's not always worth the significant investment to repair them. Instead, you can make money by selling them as-is.