like what everyone else is saying, you get what you pay for...
got mine done for $220...yes...220 bucks... but cuts were flawless, no air bubbles, scrathes, dust, nothing....perfect....my buddy got his done for 100 or so....really bad... most people spend about 150 or so on tints...and go shopping....just to make sure one place isnt tryin to jerk you around...
also check your laws to make sure you dont get to dark....cops WILL make you peel them off in front of them...