Recent cost to install solar by an RV tech/shop???

$165.00 per hour is what most RV dealers charge for service around here. Add to that I've had dealers service departments booger up adjusting an interior door, and seen them toss wheel bearings in the gravel while checking brakes. At one, one of the techs is a guy I fired a few years ago after two days for claiming to be a carpenter. Turns out he could not read a tape measure.

Most dealers hire whoever applies and knows the difference between a nail and a screw, not necessarily how to use them.