I got my tint done at auto tuners in Malden MA. All windows are 5 % as the "better" tint with the metal in it. I forget the name. All windows cost me 220$ all together (excluding windshield.)
I know that's a hike for you, but I was just chiming in on the difference in tints. Huge temp difference in the summer months when first getting in a what would normally be a hot car.
Edit; no matter where you get it done ask if the tint is hand or computer cut. Computer cut adds a much cleaner line and lasts longer.