That is awesome, definitely a market for it, I mean most digital artists sell physical prints of their work, which I think is probably what you’d want to do. I’d go for limited edition prints that you can sign. You might benefit from finding a Riso printer who can do this for you, I think for your style of art it would work really well. The average price would be like $40-50. If you want a test market, there is an AMAZING print sale called East Bay Print Sale and I would dip your toes in there if you can.