First off, welcome to Martial Talk.

I'm a bit late to this thread, but I just spent some time reading thru the posts, so I thought I'd comment.
I think we can look at this a few different ways. There are people that teach for free, there are people that teach quality material for a cost, and there are those who're running McDojos, handing out fries and a coke with the belts, and who're more concerned with the $$$ than the quality of the students. IMO, and I may be wrong, but it seems to me that you're hinting that anyone who charges is doing it for the wrong reasons. If that is the case, then I must disagree with you. I say this, because I know many martial artists, who charge, do not run a Mcdojo, teach quality, effective material and don't hand out belts.
Now, looking at your site, I see a few pics, with kids in them. Am I safe to assume that you primarily teach kids? Personally, I think its great to see kids in the arts, because it gives them a positive activity, hopefully keeps them off the streets, away from bad influences, and gets them off the couch.
I know a few people who dont have a commercial school. Its the backyard, garage, park, etc. groups, and I will say that I have received some great training and got some fantastic workouts in. No attitudes, no worries of being sued, just some good ol' hard workouts.
One thing that we need to remember, is that no matter how hard we try or how hard we want to, we will not be able to police the martial arts world. There will be great teachers, average ones, and crappy ones. What we can do, is strive to be the best that we can and offer quality material. But as I said above, just because someone charges money for lessons, does not mean that they're out for only themselves.
Mike