Re: To buy or rent??
Good Sam is the name of the company who provides a lot of RV services. ERS is Emergency Road Service, which will change a tire, bring you some gas, give you a jump start, etc, and if they can't get you going, tow you to a service center for repairs. Good insurance for $100 or less a year. There are a couple of competitors, of course.
The dealership in question is (or was) one of those small, independant, used only places, in Tucson, AZ. Before I got into my own RV, I was looking to rent/borrow one for a particular event, and their price seemed very reasonable, but all the ones available were already rented out. I ended up borrowing one from a friend and 'got hooked'.
I don't know if they still rent out units, or what their price is these days, and there is a small chance I am confusing this with another place, but I think this is it:
Pedata Resales Inc
4933 S Outlet Center Dr
Tucson, AZ 85706-1840
(520) 807-0900