I contacted support and they asked me the scenario I was trying to pull off. Once I explained it they spent time explaining the apps, taking control and showing me then ensuring against my own ignorance that it all worked flawlessly.
This is an amazing bargin at $75 for the intro level. This extension is first on my list for any future membership site.
Seriously, I can't begin to say enough about the support. Great, calm people.
This is a "non-commercial" version but only the base is. For any functionality you need to pay at least the $10.
You can pay to have them install it too but it's really simple and I doubt they do a lot of installations, but a novice user would find it worth it to have it installed.
The features are so straight forward it's scary. Just make an article with product info and add a price. Compare this to RedShop that charges you out the *ss and gives you a complicated system that hardly works.
If you need a shop, use this one. Stop wasting your time elsewhere. :-)