I have never seen this game for cheaper! It returns to $90 tomorrow, so make sure you grab a copy (or 5 in my case) before the deal expires.
This is a Wii-only game.
Update: I can confirm this isn't a pricing error because it came in one of their emails. :) In my opinion, Fishpond is pretty decent site - true, they do make some stupid pricing errors sometimes, but they always refund if you ask.