That's because like other really quality guns, from back when they made them, like the Hk P7, Walther P5, and S&W 3rd Gen Pistols, for example, they aren't as cheap to make as a modern polymer pistol. Who wants to spend twice as much, or more, when you can just a get a Glock, M&P, or any of the many others now? I think the manufacturers must make a lot more per unit on the poly guns too.
Sad...
Sad...