I found a new printing of Or Hashem by R. Chasdai Crescas on hebrewbooks.org (here), but I can't find it or any other print for sale. Any ideas?
The Mizrahi store on Ebay has several volumes for sale, including this one http://www.ebay.com/itm/Hebrew-OHR-HASHEM-RABBI-HASDAI-CRESCAS-Makor-Reprint-1555-1st-Edition-/391641946120?hash=item5b2fadd808
You can try to order a print version from the Hebrew Books site through this link.
There are online publishing houses that take pdf files and print them up for sale - the question here would be "who has rights to the text" because if one were to download the pdf and get it printed, the money should, I would think, go to the rights holder.