Occasionally I’ll see one on VA Guntrader and they do command a good price. I’ve had my 6” M57 no dash since I bought it used in 1980, and managed to pick up a pretty nice matching 4” a few years ago for $700.00. I don’t shoot them a lot anymore and when I do it’s medium plinking loads with about the same recoil as a stout .357, the heavy hitters not too often and when I do a couple cylinders is enough for me anymore.