You know, I can't say enough about the Joomla community that give these away and the guys at Joomlashack really do deserve a pat on the back. In fact, if Barrie was here now, I'd pat him on the back.
The fact is, they don't have to do this. They are a commercial entity and as such they're trying to make money but they do. And when they do, they surpass themselves by releasing a really good theme.
It's not just Joomlashack, there are loads of free Joomla themes but every time they just get better.