If I wanted to learn from this person their craft and wanted to make a desirable investment in being in their presence and knowledge, you would prevent me from accepting this opportunity?
A) Someone is a gifted tattoo artist and you want to learn the craft from them, so you pay them to teach you. You're responsible for your living expenses and you get by with odd jobs or what-have-you.
B) Someone pays you $5/day to do office work for them.
C) Someone is a gifted tattoo artist and you want to learn the craft from them, but you don't have any money to pay them. So the tattoo artist takes you on as a full-time paid intern, making a non-living wage