I have never charged for binding services or casting invis on someone. I
will accept donations if they wish to give them, but I never require a
payment. However, languages are a whole new ballgame. It takes a lot of
time and effort to learn these languages, especially Dragon and Combine. I
see nothing wrong with expecting some compensation for your time and effort
in teaching someone a language.

I understand that not eveyone feels the same way I do. I have no problem
with that and I wish them well. But to me, it makes no sense NOT to charge
someone for something that has taken a lot of time and effort to achieve.

Talarin Kal'Amon, High Elven Wizard