Around here my neighbours know I am self employed and if they need help with something that I do for a living, most insist on paying me. I don't "charge" them, but I won't insult them by refusing to accept what they offer to pay. They usually offer to pay my going rate - which is an awfull lot less than $100 an hour. My rate changes depending on what I'm doing, but my top dollar charge is $75 per hour including travel one way - no mileage charge. That is for business network support or"system down" callout. Contract work is $40