There are hundreds of storage places in any major place in Arizona, all price ranges. The Casa Grande selection sounds good because of location and it sounds like the person has personal knowledge. In Tucson just by going on line or while you are there this year checking around you can find a lot of places. I suspect the $50. price will leave you with deciding (if) you (want) to leave it there but doesn't hurt to look.
Yuma is a place where prices on about everything is lower and there is an RV park in every block it seems.
I do all my own stunts
03 Dolphin LX 6355, Workhorse W22, 8.1 vortec, 04 CR-V, Blue Ox, Brake Pro----Norm, Barb and
Doc(He's a PhD)