First of all, there is a personal buyer on ebay. Generally, they prefer paypal payment (paypal is equivalent to Alipay in China), then check or money order (equivalent to a form of cash), and then credit card. But as far as I know, sellers on ebay generally only accept credit cards in the United States. So far, I have never encountered such a situation. It seems that three digits are passwords.

This billing address is the credit card information you filled in when applying for credit.

However, it seems that you intercepted the information about writing a domestic credit card in the United States.

You can ask these questions directly to the seller on ebay, and then click Ask the seller. You can ask him if he accepts international credit cards. If not, you have to find a purchasing company to help you purchase.