Please tell me more. I am also international. Managed to get a membership via Groupon to BJ's Warehouse last year, but also could not complete any transactions due to not having a US billing address. Since then, I've read somewhere that you can add a secondary address to one of your credit cards (I have a US mailing address, so added that) and had success on a system only allowing US based purchases. Wondering if I should try this again but don't want to be sunk the cost of the membership if it doesn't work. Luckily, Groupon refunded me when I let them know I was unable to use the membership.