This is a great tutorial which can work not only for artists but for any kind of free lance workers. I work as a private tutor and educational coach and the question of a price is always complicated. Clients often don't understand that the price includes much more than just one hour session. But we all have to understand the real value of what we do and as you say defend fellows from our profession,, explaining them how to calculate the coast of rheir work. Tutorials like yours help people to not underestimate their time and their work, fixing the right price for their artworks, lessons, services, whatever. Thank you for that.