I'm interested in an online print sales solution. I've been looking at PhotoShelter and have used the Kodak ProShots system but that is being discontinued in December.
I'd be interested to hear any recommendations or comments (both negative and positive) about sites that you may have tried.
I use ExposureManager.com for my site. I haven't set up print sales, yet, so I can't really comment on that. Another one I've heard good things about is smugmug.com.