this would be a place to find an acurate price for your area.
http://www.kbb.com/
Because its low mileage doesnt always mean its worth more.
If it has sit for a long time, 6 months to a year lets say, then the gas might be getting nasty and the other fluids can build moisture.
If it was garaged then these conditions process would be slowed down.
Good Hunting!