I have a 1972 Plymouth Scamp that's been sitting for 25+ years, how much is it worth?

You sure you don't want to fix that Scamp up and drive the wheels off of it? With the cost of newer cars, filled with so many bells, whistles and computers that can fail at the drop of a hat. After 40 years of getting a new car every 4-6 years, I'm thinking of driving a 70 Dart for my daily transportation for the rest of my life. Simple in design, parts pretty easy to find, and I can fix almost anything that dies myself. My latest Mopar (new in 2009) blew a head gasket and hydro locked at 60,000 miles. I tried to find a rebuilt engine to replace it, but nobody even offers them.