I have purchased custom frames from American Frame before, and always been really satisfied with the experience. They have some nice calculators that let you start with your artwork dimensions and add to it mat width on all sides, as well as figuring extra to fill in a frame. They ship you the dissembled frame by mail, and you assemble it and insert your artwork. Materials are high quality and always nicely finished. Highly recommended.
Today, I got an e-mail from them that they are starting a new service that allows artists to actually sell prints of their work through the American Frame web site. I haven’t signed up yet, but I assume you probably upload high quality scans/photos of your work to their site, and they in turn print out high-quality Giclee prints as customers request your work. Then, they cut you a check (price is whatever YOU set for your work) periodically based on your sales. I think you should try it out, Gabe! Some of your landscapes would be great, I think.