I put new ink cartridges in my inkjet printer yesterday. I mention this because I used up the previous cartridges printing stuff for other people. I printed maybe ten sheets of paper for my personal use. All the rest was for about three people who had come to think of me as their own personal Kinko's.
When you offer to print something for someone, I've learned, their likely response is to then insist that you also provide them scanning, email service, web browsing, layout and design service and faxing. Someone actually got annoyed with me a couple of years back because I didn't have a fax machine here for her to use.
The real Kinko's (now FedEx Office) is about six blocks from my house, and not terribly expensive. I sometimes use it myself.