So your being paid for what you do is OK; for others not?

"When I accept payment for my work it is private work.." In what way is a lecture "private" except that only certain people can afford to be there, whether from their own pocket or from that of the host?

In what way is a folk event not private when only those who can afford the entrance fee will be there?

What other free services would you have?

You mentioned earlier that you were once a teacher - did you do that for free or was it at a "private" school?