As someone who has a bit of experience with this I would say $240 is not that bad. I know to wrap the roof of the mustang, including material is about $250 from the guy I know. You are paying for the guys experience and you are not using his product. I know some sign guys don't like the 3M product so he may be factoring in what he sees as a "headache". Where did you get you stripes from? Not all vinyl is the same and it does have a shelf life.