BuddyPress.org

@Shnooka30

Try this:

http://www.primothemes.com/post/s2member-membership-plugin-with-paypal/

s2member allows for both free and paid levels (up to 4), and you can get really creative with what you want to restrict; from simple URIs to custom conditionals, and all the way to a whole bunch of hooks & filters to play with. Oh,and it works just fine with BP. Just be sure to read the documentation… there’s a lot!