That hourly rate for RV service work here in NW Indiana and the south Chicago suburbs is about the norm. At least that has been my experience.
That's one of the reasons if it isn't on warranty I try to make my own repairs when feasible. Physical limitations are starting to become a problem as I age but that's what grandsons are for!
2018 ACE 27.2
Toad 2019 Jeep Cherokee Trailhawk
Roadmaster Falcon All Terrain Towbar