Without seeing pictures of the roof, I'm not sure what it would cost to repair the damage. The rear window is about $450, mirror cover and door stuff is around another $300. Most of the cost will be the labor to pop up the dings in the roof and hood and prep + paint.
Rear taillights are about $150 each, but they can probably find a cheaper 3rd party brand for that (Tyco).
Only total I've seen so far on this generation was a guy that got rear-ended into another car. All airbags deployed, and those alone were $11k