depends on the quality of workmanship and type of tint. it can be cheapo tint (color turns purple after a few years and bubbles up) or huper optik cermanic (highly unlikey as it will run you $400-500).
I had the entire car done for $99.99 It will be 3 years in Oct. It looks perfect today. Nothing discolored and zero bubbles. It includes a lifetime warranty.
im looking at spending 130, for my tint, i dont know what kind they use yet. but that will be one of the questions i ask. when i go in. the place ill be using is comming recommended by several people i know.