That's why I got mine. I would have put in a used one if I could have found one under $250.
I imagine metal recycling has taken a massive toll on used radiators in the past 25 years ... non Hemi and Six Pak rads have not brought much $ and they are heavy, fragile, cut you or scrape your legs up when you bump into them, easy to knock over, and take up a lot of room so people probably scrapped them versus store them. I have a couple but they are not the correct numbers for muscle cars so no one is pounding my door down to get them.
I did sell a 26" 047 68 Big Block B body Rad recently though. I need a nice 22" 045 for my R/T or at least the correct straps - i have some top and bottom tanks.
Sorry for going off the rails there ... move along - nothing to see here