> Well, it is, indeed. This is not clearly illegal, as you 
> can sell GPL products according to the license. But the
> way it is sold is a bit deceptive. No reference to the
> license, no reference to the program name.

Yes, it's allowed to sell GPL-Programs. But the complete
sourcecode has to be on the disk and I'm sure that it's not
allowed to change the copyright note. I think someone should
buy this to check if this versions really doesn't violate
the GPL. If something seems to be wrong, then you could contact:

<http://www.gnu.org/licenses/gpl-violation.html>