Posting this here and I will reference this to the other location where someone requested it. This is amembers xtream-UI Billing integration. You still need to go out to amember and sign up and install (its very straight forward, and I think they will even do it for you) but then you add this xtream-codes addon to your amember install and your ready to go:
Xtream-Codes addon for Amember
If you have trouble getting setup shoot me a message or post here, but the README is pretty straight forward and easy to follow.
Xtream-Codes addon for Amember
If you have trouble getting setup shoot me a message or post here, but the README is pretty straight forward and easy to follow.