So... you're paying for the privilege of saving him from actually working in his own business...This is definitely a commercial for profit business. With about 70 students @$120 usd a month. And yes I pay full dues myself. I go to demonstrations and recruiting events for the dojo, I sacrifice a lot of time even outside the 4 days a week I am at the dojo. It just feels like a slimy situation and I feel that it is time to go. Although I will feel guilty about leaving especially the students. It isn't their fault, and I am sure guilt trips will be a part of me leaving. I also am worried about leaving in bad standings with the Federation in Japan. If I ever want to teach this style on my own I would need to get their permission, and I don't want to rock the boat with them. So it is really tough for me.
This is one of my biggest complaints about a lot of commercial martial arts schools. They get students trained up to where they can teach a class, then move them into "instructor training programs" which turn out to be teaching classes with very little new instruction or guidance on how to teach so that the school can offer programs and classes without actually paying people to teach. In fact, often they're paying a premium price for this "privilege." It's a rip-off, and a theft of the student's time if not money.