Yeah, $100 shipped has become the new baseline it seems.
That said, this game is
worth twice that, so go ahead and get it now. You'll get far more enjoyment out of it than you will out of 2 of the latest $50-60 shovelware games for current generation systems. Worst case, you'll play it, enjoy it, and sell it off later for about what you put into it. I don't see the price crashing on this game anytime in our lifetime.