Seriously man what are you thinking? Have you ever made your own project? There is NOTHING wrong with trying to make a business out of something you created and I'm pretty ticked off that there are people out there writing stuff like this.
Why the outrage? If they're promising support, charging makes sense and in any case: their code, their license. It's not like anyone is required to buy it and it'd cost you way more than $60 to duplicate it.
Well considering it is probably a copy of someone elses who spent weeks figuring out the math required to do path finding while working on MSDOS or something. I kind of agree.
But then you see it also includes developer support and such so it all makes sense.
However this does lead to an interesting concern, what's the difference? I don't seem to see anywhere were it says you can't use the free version for commercial? Or what you get for free and what costs $60?