The last 6 prices I have for this model since 12/1/2013 range from $400 to $565 averaging $491
The longer term track:
Smith & Wesson 36 1-7/8 in barrel Revolver in .38 Special. Blue Book of Gun Values (35th Edition) indicates between $465 in 95% condition and $650 in 100% condition for this gun. I have 69 recorded prices for this model gun from $250 to $600 over a period of 6 Yrs 9 Mos ending October 12, 2014. The average price as of that date was $405. No refurbs, no refinishes, regular sights. All represented as 95% or better. No distinction forengineering revision, if any, no special editions, no distinctions for box, papers, tools. Current or last MSRP is $822.