IMO, it should have been made clear to the SUV owner that he should furnish you a copy of the formal estimate with the breakdown of the repairs made so you can be given ample time to canvass on your own and verify the costs. You should tell him that you are willing to shoulder the cost but he should do his part and be PATIENT and allow you to check that it is a FAIR costing.

Do post the car type, pics and repairs done so the forumers can see it and give their own two cents. The price will depend on what type of SUV and what were the parts damaged. Were the bumper and some panels of his SUV that were damaged replaced and painted?

I also agree with what CVT mentioned, there is also the "abala" factor especially if he had no hand in causing the accident except for being at the wrong place at the wrong time. Not too many people realize this immediately.