Ever feel supremely stiffed after paying good money for a textbook or paperback copy of a book that’s been in the public domain for decades? The Public Domain Books Reprints Service acts as a go-between for sites like Project Gutenberg, Google Books’ public works, and other copyright-free sites and self-publishing service Lulu.com, which charges fairly decent prices to print nice-looking tomes. It’s not free, but it could save you a bit of cash on textbooks, or help you find a paper copy of any obscure works you’re looking for.