I wanted always to know, but never asked: -
Why do you guys charge multiple price for one installation? It doesn't matter how many storefronts or interfaces there are, provided I install the script only once, in one single doc-root, the price should be for one installation... Two installations - double the price. Three installations - triple the price and give some discount, etc. This is the legit marketing logic...
I understand the higher price, if the product was different, like the regular CS-Cart and Ultimate - but it is one and the same for most addons.