Here is what I have done:
Go to your local tint shop, talk to the tinter (not the front-desk person), get his phone number, give him a call and he would come out and do your tinting for you @your place (or similar) for 1/2 the price, and still make more than 15 bucks/hour that he is getting over at the shop.
Trick is to find the expirienced guy that you simply would not have to worry about the warranty and ****z like that. Down here in Alberta tinting is 300 CND for all windows (shop), and 130-170 if the guy does it off-time.
Huge difference...
Also, tinting yourself is not complicated either, you just have to invest in a 20 dollar spunge and make templates to cut the film near the window edge, heat gun does miracles on curved surfaces!