If only the bumper was damaged, you should be fine. However, you should have it checked by your personal mechanic. As far as the fuel smell, it could be a leak, so mention that to your mechanic.
As far as the price, I can't tell you what it is worth without being there. This type of vehicle can be a high maintenance vehicle and repairs can be expensive.
Always remember the old saying, "Buyer Beware."
Monday, January 13th, 2014 AT 10:23 AM