It depends on the car, but it can run anywhere from $550 for a full kit on up, depending on how many extra parts like mirrors, etc... that you need done. There is a new generation 3M film that just came out in the last 6 months, so I wouldn't recommend using Ebay to buy your kit. Especially since some of the sellers charge close to the amount it would cost to get the whole kit installed with a warranty.

If you are interested PM me. You can come out and take a look at an install in progress and ask any questions. They have done over 150 350Z's alone, if that matters. I am out of town until Thursday, so give me a few days to get back with you.