Music teachers: Is he ripping people off?

[nitsrek]

Guitar Teacher Bob is in his mid-to-late 20s has a B.A. in social sciences, and he studies guitar under another teacher.

Bob teaches guitar to kids, charging $25 per half hour - whether he's paying for the space he uses or not. Is this kosher considering how young he is and the type of music training he has (and continues to receive)?


Thanks!