this stuff costs around 300+ depending on the car, at the time I got my tints done to my car the shop I did it at was the owner that works on the installs, at the time he was installing this on an old BMW that te windshield for it cost 450$ for some reason, the guy was installing it for 350.....
I asked him about fading and color changes and stuff he told me that he has had it for 5 years on his truck and 0 change in color or anything, I had it done on my fog lights and headlights, he changed me 100$ for 2 headlights and the fog lights, another thing that was good about this shop and the guy was his warrantee was life time and he stood by his word after I had my head lights peal just a bit, but he had now shut down his shop