"The formula stays. The confidence is a work in progress." How I Price My Work I price my paintings using a formula: materials plus an hourly rate based on the medium, with a small addition for commissioned work. Acrylics I price at $45 an hour. Watercolour at $25 because I'm still developing in that medium and I don't think it's fair to charge for learning time I'm still accumulating. Studies and demo pieces get minimum wage because that's honest about what they are. On pape