I wanted to thank all of you who contributed to my questions regarding the aftermarket window tint. I know that each state has its' restrictions regarding how much and what can be tinted. I live in Texas, and I talked to 3 different shops about the window tint and read their written guarantees. For lifetime protection against bubbles, peeling, etc., the prices ranged, including tax, from 149.99 to around 278.95 installed. One of the shops guaranteed, through the window tint maker Llumar, repairing any scratches made by seatbelts from passengers or myself without charge. The other 2 shops written information stated that the maker of the tint, like 3M, would not cover such scratch/cut damage.
I told each shop that I wanted the tinting to be legal to pass state inspection, here in Texas, and they said that the front side windows could only be a certain tint level, around 25-35%, the back passenger windows could be darker, and the back window could be "limousine dark."
I went "medium dark", whatever that is, for the back passenger windows and the back window and the shop said that it would take about a week to "cure" properly, they said if there were any problems with haze, can't see out of the glass because of the installation, to bring it back and they would fix it free using computer cut tinting as the original aftermarket installation, and the written guarantee states that in writing from the tint manufacturer.
Again, thanks to those of you who told me what you knew about aftermarket tinting, and thanks to BuickGN for letting me see a picture of the tinting on his car.