Please check out Paxum. We have many adult content providers using our services (we are adult friendly) and you don't even need to use a credit card to make the purchase if you prefer, since we also provide instantly delivered Peer-to-Peer payments. Signup is free, there are no monthly maintenance fees and you can send and receive money instantly with other Paxum users, or withdraw your funds in a variety of ways, including to the Paxum Prepaid Mastercard. Thanks for your time!