The difference is that we used WA tools to differentiate our stores from the Open Source packages. Now we pay the same price as the end-user, so we both have the same starting point. 
Gotcha.
But ... I think you are barking up the wrong tree.
The packages all claim to save someone WORK -- the drill and tedium of having to learn what really makes them tick and work. That is to say, they all claim to obscure knowledge. But ... they all still have to be customized and tweaked.
The PowerStore wizard told me that I would eventually end up in the same place as the freebie products ... having absolutely no idea how to make the wretched thing fit my specific needs.
Someone recommended ZenCart, but I could not get it to do what I wanted. Same with OSCommerce.
I ended up with eCart (4) because it was the only product I could find that worked with my Payment Gateway (which I did not want to change due to possible bank penalties). I could see that with a bit of leg work, it would give me exactly what I wanted -- the freedom to make it do exactly what I wanted as my knowledge improved. Add-To_Cart and the code was in plain view. I see that one day I would know what every bit of it was for. That was why I went with it.
You and an end-user might have the same exact starting-point, but I don't see how that's different from now. For example ... an end-user is free to go to the Container Store and Target or Home Improvement Emporium and buy everything they need to redecorate a room. Still a good market in interior home designers and so forth. Don't see the difference, but maybe I am missing something. Happens, sometimes.
My objection to PowerStore remains. It is close to useless as an instrument to help people such as myself who are willing to do the work learn what is going on. I hit an Add-To-Cart button, I can see a before and an after and work out what that code did and why. You work through the PowerStore wizard and you get what? Zero information, which is no use to you when it doesn't work -- or when you want to become the person who can figure out how one could set about creating such tools.
It is not WebAssist's job to cater to people like that (me). It is their job to service the market and make money. I totally understand that. There are more dollars out there than just mine. I understand that too.
Bye now.
