Some cars are more prone to chipping, also known as "road rash", caused by highway driving.  Anyone who own's an E36 BMW know's that very well.  Even with this severe case, touch up made a world of difference.  This we charged $400 when the body shop quoted $2000 to repaint the entire front end!  This one also had a bad repaint on the front bumper that made for a particularly horrid paint peeling...