Mounting and balancing tires?

Places like Griffins wanted $47 a tire to mount and balance with the wheel off your bike if you don’t buy from the, $27 if you do. Those prices are rediculous even if you did buy the tire from them. I figured the cost was from some special equipment or training but no, it just uses a standard tire machine. So I know I’ll be mounting my own tires from now on and just getting them balanced.