Being in NJ, he's seeing about the same prices as I do in CT. $5K for a 97 is very high. The mileage is the only factor that brings price back up and yet.. $5K still seems quite high for any 97. However if the mileage were to stay low the car would be a collector quality car in no time. It's already almost an antique.
FWIW my neighbor got into her 2002 Dark Blue GT with 97K on the clock for ~$1200. Condition was bad, and that 1200 was after a new nose, fresh paint etc.
Problem with a car that old and mileage that low is you'll be doing all kinds of dry rot, flat spotted wheel bearings etc kinda stuff soon.