Hi Everyone! I'm moving from Washington to Arizona (Phoenix) and need some advice on insulating my garage or not. All my sales people (women) are trying to talk me out of spending the money, but I plan to occasionally do stained glass work in the garage and want to be comfortable while doing it. At the same time, it's so hot in Arizona, I don't know if insulating the garage will help at all. I planned to have some kind of air conditioning to cool the garage when I was working in it, not running all the time. I'm building a house in a 55+ community and the builder offers an insulation package for $3,205 "add insulation to walls at standard garage with 4' extension and R-38 to garage ceilings." The garage doors are insulated. They also offer a 9' cabinet package for $1,715 "thermofused melamine with 4 particle board shelves per bay and adjustable feet." And . . . "solid color epoxy floor coating" for $1,845. I don't want to get carried away with the garage design, and don't know if the prices are high or not. What do you advise?