their pretty hard to come by. i see lots of stuff with 20 hci, but hardly any with 20dci clean / imbuable. I dont think people would pay a ton, seems now if people are paying top dollar there buying legendary antiques with super high wieght.
i want to say like 20 - 35 mil per piece? maybe higher if you find someone who really needs it. im sure they would insta-sell for around 10m each.