Are they Apple original schematics or were they created from scratch? If its the former, the fact that he is copying and reselling them for a profit isn't very ethical. I wouldn't be surprised if his business went under because of his refusal to streamline anything. Manually photocopying something each time its requested today is beyond ridiculous. Scan the things in and send out PDFs, charge extra for prints. The fact that he couldn't even be bothered to get a merchant account to take credit cards or even setup a Paypal account says a lot.

As for service manuals being available on the internet, I have a lot of equipment that I have to support now that the vendor has long discontinued support. The existence of publicly available service information is what keeps a lot of older stuff alive. If it wasn't released online, the information would likely have been lost forever. I have contacted vendors that actually threw out the older service information on their products. I couldn't legally purchase it even if I wanted to! I do pay for service manuals for my cars (most MFRs actively update their electronic service systems with new information), but for consumer electronics most of the stuff is online already.