It's really more a piece of Smith & Wesson history now than the very best gun you can buy today at any price. Only one for sale in my area is $599; however, I must admit that it's in very close to brand new condition. It came from a collection of over 600 handguns and most are virtually as-new. As a collector piece, it is probably worth the money. As a gun bought to be carried or otherwise used for personal protection today, you can likely find something cheaper or for the same price that you may like better.
In other words, it all depends what you are looking for.