It’s completely usable, as long as you have your husband’s credit card information. Foreign overseas shopping websites only require the card number, name, and validity period. No other passwords are needed. You must Protect your information. In addition, I see that you are talking about the issue of billing address. Generally speaking, Amazon in the United States can use the same billing address as the shipping address, but some websites need to fix a single billing address. It depends on the website you visit.