They are quite possibly the perfect carry revolver. Superbly balanced, accurate, well made and look good doing all that. Low maintenance stainless to boot.
Last of the everything you need in a revolver and nothing you don't Smith & Wessons.
The 3 inch 66-4 without porting was made in the smallest numbers, IIRC. It is also the last of the desireable 3 inch 66's, for me. $950 for a LNIB example is a fair price, IMO.
Then again, I already have two.
Regards 18DAI