Princing Oil on Canvas
This is a tricky subject and I do not have the right answer or formula. A few fellow artists do it based on the dimensions of the piece as well as the type of work. A formula used by many painters is:
Hours taken x fee per hour + cost of materials + any other production costs + sales commission + tax/sales commission = sale price
Then is the issue of being alive or not which really makes me mad because of course I am alive now but who knows next year.
Being an artist takes a lot of courage and work. Still, I love it.