I just took my '07 in for a cracked windshield (I do not believe any rock hit it) at 14,000 miles. The quote was $1895 for parts/labor with the rain sensor. We live in Chicago, if that makes any difference. I think they're avoiding a warranty repair; they did the "pen test" and of course there's a snag because the glass isn't perfect anymore! I read on another thread that Corporate will ask them to take a better lok and the person got theirs covered under warranty. Sorry I can't help to explain the other charges - good luck!