a good tinting place should not charge you by the percentage you get (unless you get a specialized tint i.e. mirror tint).....it should charge you for how many windows they have to do, and even the windshield banner. $120 is a good price for the Altima
I paid $128 for the Endurance which is somewhat reflective, and $100 for a second layer of 20% looks soo sweet. I could make faces at you at a light and you wouldn't know
I got mine (20%) for $150 w/lifetime warrenty........that was the cheapest that i found. $120 is a good price. The place where i got mine charged $30 per window, which isn't that bad either.