So Cal here, I went to flat rate of $150 per hour regardless of type. No mileage or trip charges added. Most customers are within 60 miles. I have one fairly remote Konica C8000 and he is happy to agree to a 2 hour minimum service call when needed. Some competitors only charge $125 but usually add on a trip charge or mileage on top. I haven't had anyone flinch when quoted $150.

Lee