Hmm... too high for MA and not sure how well it removes. GLWS!
Don't let the tints be the one thing holding you back from the car. I just bought a MS3 with tints all around and had to remove the front tints the next day to comply with Chicago law (bastards). The method I used involved a cheep ($25) handheld clothes steamer and a lot of patience. Basically you just steam one area at a time and VERY slowly pull the tint off the window, if you do it slow enough the tint comes off and does not leave any glue behind. Real simple, no mess, no chemicals. It takes a while though, took me just under 2 hours.
I followed these instructions:
http://www.instructables.com/id/How-to-remove-car-window-tint:-the-not-messy,-chea/
Best part is when you're done you can return the steamer (they generally do a crap job of straightening clothes).
Hope it helps