If it was 3m with lifetime warranty for $ 200 I would have jumped on it. It was no name brand with 2 year warranty for 200. $ 300+ for lifetime no name brand!
So I just did it myself. My brother in law paid 300 something for his truck with 3M and lifetime warranty. I don't think that the 3m roll is $ 20/sq feet. There is more than $ 100 profit/job. And you think that money goes to the employee or the shop owner? Just like car alarm installation or fog light installation or those chrome bars they sell for couple of hundred bucks.
And its a jeep, the glass might not going to survive lifetime
Just give it a shot if it doesn't work you can go the the shop anyways. All I am saying is that its not that hard.