Just out of interest, what would you pay or expect the value of a "CS-Cart B2C License" that has lifetime upgrades. These are not and have never been available to buy and to be honest you will never be able to either.
You might ask why I own a good few of them, and that is because back in 2006 when CS-Cart started I supplied a free development server for v1.0 to be developed on plus beta test, debug etc... and in return I was given a bunch of these very very special licences!