and to quote from his website:
It is currently free but may become a pay product later... And knowing Rob as well as I do, I know he produces good quality software.This initial release (v0.9.0.0) is incomplete, it is being released as 'DemandWare'. That is to say, it's future rests on the demand for it. If no-one uses it or wants it then I will not be committing further development time to finishing it and putting in some of the more pro features on the feature queue.
The only thing that maybe a bit of a turn off to some of you is it uses the .NET Framework v4 and XNA v4.
