Guild Wars 2

dmark.6758:

Hi im new to gw2 and i was wondering if u can purchase gw2 gems with prepaid american express card?

I think that may be possible, but I have not done it personally. You can look at the site for purchases (click the Black Lion image in the upper left in the game) to review your payment options. (You should be able to do this without finalizing the sale, of course.)