iv thought about doing the same thing but never tried to do it based of how my prints sell on deviant art, i got like a 100 pics mini truck related
http://crochface.deviantart.com/prints/
it costs a few bucks more for the customer but they can choose what size and more than just prints like mousepads and mugs and fridge magnets. and i maybe get one order every month or 2
ive been curious about selling prints though from home but also wondered if it was worth my time, so ill be interest to hear how they sell