Yes we(Concours) clean the exterior where the film will be placed. Hood, fenders, bumper and mirrors are $650. Add on $100 bucks for the headlights.

As far as coverage, it really depends on the car. 3M has kits that are designed to cover the areas that are most vulnerable. Depending on how much money you want to spend you can cover pretty much any part of the car. A guy I work with has some on his spoiler to prevent water spots and the owner has 17 pieces on his truck, including one underneath the gas cap to prevent scratching when it hangs there. Most people stick with the general coverage though.

There is also a warranty offered through the shop on actual application of the film and another warranty on the actual film itself through 3M.

I know this might sound expensive( it does to me at least), but you really do get what you pay for..

By the way I just work there, so this is my honest opinion, I make no money whether you come in or not.