@Carl Hancock - I don't say that you should not charge.

Initially what WPAvengers pointed, intrigued me too, about how Woothemes lies to custommers about "numbers". That is more unethical then the fact that WPAvengers is redistributing Woothemes "software".

The fact is that anybody who creates software under GPL license and charges for it, must be aware that others that have access to the source code can alter it and redistribute, as long as they don't redistribute parts that aren't under GPL license.

Still, WPAvengers and GPLClub are doing it the wrong way.