We're hoping that you'll like the brand new Membership plugin we've just released here at wordpress.org:
Essentially it's a fully featured, PayPal integrated membership plugin that comes with a couple of important difference to all the other membership plugins out there/
1. It's free :)
2. It works!
It's the product of 6+ months of development by the WPMU DEV team and we're planning on improving it all the time.
Sure it's got a 'pro' cousin, but for the vast majority of users the features here will fit requirements perfectly.
So... we'd love to know your thoughts, questions, suggestions and requests!