Not a comment regarding reselling...
Just adding my 2 cents that I enjoy looking at images of space, so far I have just been using HubbleSite, but have found some great stuff there including a 35 mb jpg of the Eagle Nebula and a 200 mb jpg of the Carina Nebula.
I WISH I had a nice printer. So, with the copyright information they have, it would be ok to send one of these images to an online print-lab as well?
[almost a redundant question, but I just had to ask]
Thanks.