What's it worth? 1972 Plymouth Scamp

I understand and I'm not asking you to appraise this car from a vague description and no pictures.... just approx value of a grade 1,2,3,4 vehicle, if similar in value to a 72 Dart, etc. I've found restored examples selling in the 15k-22k range. This one is unrestored, supposedly low miles, little/no rust, probably needs repainted, been sitting a long time and needs many things gone through to make it road worthy again.