Model 27-2
$500 is not a bad deal for a 96% gun in a 31/2"Model 27!
$600 would be the low end for a nice one 98% or better,that is Pinned and recessed with the Box and papers,a NIB add $150 to $200 depending on where you are.
The Model 27 was the Flagship of Smith and Wesson for a long time,and the 31/2" barrel length is the most sought after length.
I have bought 27's and sold 27's cheaper but not in the past year or so and not 31/2".
Could you find one cheaper,maybe how long do you want to wait?Short barrel length Smiths are getting harder and harder to find.
If you want the gun try to get the best deal,but with a 27 in 31/2","You rairly will pay to Much,but may buy to soon"
By the way I will warn you those things are like peanuts"You will not want just one"