I wanted to post a link to my old pal Travis Hanson's work. You might already be familiar with his art as he's been doing fantasy comics on the web since way back when. He used to do a strip called 'The Bean' which has now migrated to being a series of illustrated novels.
I was fortunate enough to have the adjacent table to him at the Alternative Press Expo in SF last year. We'd me once or twice before and have known each other online for years. He mentioned to me then that he was now having much more success from producing & selling large-format full color prints as opposed to individual comics, and he was certainly doing very well with it at the show.
He recently posted in his journal at DeviantArt.com (where he has had a lot of success selling prints and building community) that he's decided to shelve all his comics work in favor of just doing prints & illustration.
The fact is that you can sell one large print for more than a whole bunch of books would go for. I've asked him to stop by and be a bit of a 'visiting wizard' and hopefully tell us a bit more about it.