After considerable debate, I decided to upload some of my art onto RedBubble, where it can be ordered in various different sizes, on various styles of paper. I just ordered an 18×24″ Richard Dawkins on RB’s “art” paper, and I can personally attest to the quality. Appears to be about 80-100lbs/sq.inch, and the print quality is very sharp. Choose “art” paper if you want your image matte and rough with broad borders, choose “poster” if you want smooth and gloss with a thin border. Overall I’m very impressed, and happy to offer my art on another platform!