I'm sort of in the same boat as Thomas. I've never really tried selling work and doubt my type of photography would get much gallery/buyer interest, so I do it for myself. I have to admit I might be more inclined to try to sell if I had more of a "portfolio" together, some kind of cohesive (?) body of images I could carry around and show. I probably haven't focused enough on that sort of thing in recent years although I could put something together if I just buckled down and did it. But I'm a pretty slow worker. I'm hypercritical and generally make relatively few images in comparison to most people. The other obstacle to seriously marketing myself is scanning. I suck at it and it never looks any good. Unfortunately it seems most galleries want to see scans before they see prints.