thanks OP for sharing! i just tried with a prepaid visa and got the following message:

"Pending

We are unable to complete your transaction until further review. It can take up to 24 hours to complete this transaction. We apologize for any inconvenience this delay may cause."

might work as it didn't show failed but i couldn't get the payment to go thru instantaneously. will probably just stick to keeping $1 on gift cards from now on since i'd prefer to fly on the radar....