I bought a 'helper' math sheet from my friend for a buck. He has no license (copyright, trademark, etc.) to it and he doesn't want me to copy it. If I own the physical copy now, isn't it fine for me to print copies and give them out for free? There was no contract but a verbal one and he does not want me printing copies because he handwrote it and thinks he could make more money from other people if I don't give it to them for free (he probably won't though).