I wanted a copy and the only place available was NWS. $41.99 plus Priority shipping. Now is probably the time unless a reprint is coming that I am unaware of.
IIRC the same thing happened with Friedrich a while back.
Scarcity increased July 2010: http://boardgamegeek.com/thread/543244/cant-find-a-copy-of-t...
People asking about reprints October 2010 (Richard Sivel replies, "Whether there will be a third print run or not? I have not yet decided."):
New edition comes out April 2011:
Combine previous Histogame experience with Richard Sivel's comments about rewriting the rules:
and it seems a good guess that there will be not just a reprint but a new edition entirely.
I don't know if there are any convenient anniversaries (the 300th anniversary of the Pragmatic Sanction of 1713? The 270th anniversary of the Second Silesian War?) to tie to a new edition to like there was with Friedrich