Depending on the size and look of the dent and the peeling paint, I would think you should be able to get somewhere in the neighborhood of $6000 due to the low miles for a 20 year old car.
Non-smokers with sensitive noses probably wouldn't go quite that high but affordable, reliable used cars are still at a bit of a premium.
Photos of the dent and peeling paint would help with valuation.
Listing the car online with a nationwide service would probably help get the max price for it. I searched nationwide for 8 months before I found my last one in SC.
Disclaimer: I'm not in the auto industry but spent a lot of time looking nationwide for a 2003 GT. If I were still in the market, I would be very interested.
2005 Vibe - 240k
2003 Vibe GT - 117k (totaled)
2003 Vibe GT - 111k