What are you trying to purchase? Batman: Arkham Asylum
What error code or message are you receiving (from the console)? Can't authorize the selected payment option. Please select a different payment option or add a new one.
What region is your account? USA
What region do you physically connect from? USA
I use the same card to purchase items on ebay so I know its working fine (also add paypal too and got the same error)... could it be xbox live?