Bill's got it right. The original details of the factory build and current condition have to be considered to give any advice. For me, if it's a notch back coupe or convertible I would not have any interest, regardless of the family tie, and I'd say their price is very high. If it's a fast back it would be of interest, but that price is still tall unless it's in pristine condition. The family tie is of zero value to anyone but family. Who's setting that $15K price?