About 4 years ago I had a chance to buy this type of car in blue up in Wyoming.
Had the motor and trans. Had body work started. Mostly complete car for 15,000.
That was 4 years ago, so in todays market that is something like 8-9 K.
My opinion of course. on market value.
I was there after an aar or 71 the guy had. Wanted way too much for the those cars.