If anything, I think this is a sign that geeks are gaining power. I mean, old cars, golf clubs, pens, and other obsolete stuff that business people like can be collectable and worth a lot of money. Old computers being worth a lot of money would indicate that nerds also have a bunch of surplus wealth that can be spent on nostalgia.

(of course, this assumes that it is being bought out of nostalgia. I can imagine situations where it would make sense to spend $1500 for a keyboard for it's utilitarian value, if the keyboard really was that much better for me than other alternatives. If that is the case, it really makes no statement about the rise or fall of the nerds, though it would say something sad about the current state of user interface hardware.)