Well… I bought a 4" P&R 63 from a gun show patron last year for $450 and he said that was twice what he paid for it new… and was happy.
Paid $675 for my 1980 Model 63 4", serial M159xxx in 2014. Factor in inflation and current gun market and that $1,000 price is probably about right. The last one I saw at a gun show several years ago was price at $950. They are hard to find.