I live in New Jersey and I'm 18 years old, the other day I was backing up my car to get out of a parking spot and accidentally hit a car behind me. I simply left a minor dent. The owner of the car and I agreed to not involve our insurances, but now he says it is going to cost him $600 to get it fixed, which is completely outrageous. 2 months ago I got into a car accident which cost me to $700 to get my hood, light, and side completely changed along with the paint job. So I get the feeling this guy is completely ripping me off because I think it'll cost so much less to simply get it popped back up. Any advice on how to handle this situation?