Amember is simply an excellent membership managment program! If you want an easy to install, and ready-to-go script in PHP/MySQL, this is the one for you! If you get the $99.95 version, you do not only get the script + a free installation. You get free upgrades and an excellent tech support!
A proof of that: The non-profit org I was working for needed lots (but lots) of changes in the script. AMEMBER tech support do not even gave me the answers, they provided a free-reengineering and a free new reinstallation! And when I needed to make more, and more changes, they answered, and so, I could meet all the requeriments the org was asking.
AMEMBER script is also fantastic. It is easy to use, easy to configure, and more than effective. All the mentioned features work more than perfectly. It´s pretty amazing all the advantages you get from Cgi-central!!!
Cons: Though the system (and the new version) is pretty complete, they still need to make an online setup system for controlling ALL the features online (even the most complex and rare). STILL, their actual setup system is very good, since it covers the most common, and uncommon features. =)