Automated Membership Program

This is my first post. I wrote down all the details of the program I wanted, and how I thought it should work. However, instead of boring providers with so much detailed information, I decided that perhaps it would be much quicker and easier for everyone if I simply asked, "Can anyone provide a program SIMILAR to Membergate?" [login to view URL] I would like to hear from those who have provided similar websites, and perhaps a link or two showing your work. There is no real rush at the moment, and I don't expect that you should provide a binding bid until I have reviewed what you have to offer and we have both agreed to the final project. Therefore, I do not know what the budget may be at this moment. Maybe you should tell me what I should expect. Thank you.