In reference to replacing your 401k with machineguns, you are about 20 years too late on that idea. Trust me, they are expensive to maintain and feed. That was one of the primary reasons people would get rid of them pre-86. I guess you could keep them in the safe and shoot them once in a great while. I like my Lage too much to do that.
Their prices have pretty much plateaued. They have gone down a little bit because of the economy. However, they have only been fluctuating +/- 10% for several years. You reach a limit to what people can and will pay.