71 Demon here
Yup, $250 was what a shell was when I was a teen. I bought a 1972 Demon 340 4 speed that ran excellent, but had rust in the quarters, trunk and front floors (everything else was super solid) for $700 in about 1984. I bought a 1972 Charger Rallye 440 Auto that looked decent, had minor rust and ran okay in about 1985 also for $700. I also bought two complete 1971 Road Runners, both 383 auto cars that were non-running for $300 for both of them, $150 each LOL, also around 1985-1986...