It was a perfectly reasonable estimate given the amount of information provided in the OP.
Now that you have given a bit more information, I will assume that its a shallow 3 or 4 inch long dent, like you would get if someone backed into it in a parking lot. Something like that might be 400- 800 dollars depending on what area of the country you are in, labor rates vary widely. Matching the paint on an almost 10 year old car will be a different matter, especially if its a metallic paint.
Thanks for your most recent post, that was the type of number I was looking for.
Honestly, while the OP lack detailed information, quarter panel damage should never amount to 10,000 unless you're talking about a 200,000+ vehicle, which an 02 jeep most certainly is not.
Paint is black, so I wouldn't figure to hard to match that.
Again, thanks for the info.