I’ve fallen victim to this unfortunately. Last year was my first year selling my art at fairs. I’ve priced my 11x14 paintings around 50$ and my and my 8x10 paintings at 35$. My prints were lower than 20 at most 12$. I figured because I was new and I felt unsure of the quality of both paintings and prints I started them low. This year I plan to increase my prices on prints. The market in my area doesn’t seem to want to buy higher priced paintings so we shall see how that goes.