Searching: Membership Registration & Checkout Combined plugin

Hello everyone,

After messing around for days with numerous wordpress plugins and searching for a suitable plugin over the net I find myself brainwashed to say the least.

The abundance of membership plugins works at a disadvantage here as I’m searching for a specific plugin which supports a combined checkout/registration form. As example, s2member has the pro function which costs little under 100 dollars and adds a combined checkout/registration form where I’m in search of a plugin which supports that function for free.

So, im kindly asking for any suggestions, and with my hand on my heart I state that I’ve tried my verry best in finding a suitable plugin before asking help on this subject.

Many, many thanks in advance!