Just went into EBGames (Toronto) looking for WiiFit, no luck, but I saw that they'd dropped the price of Boom Blox by $10 to $39.99.
That's not a good sign for sales I guess but for me $50 was too much to pay for a puzzle game - even a good one - but I immediately grabbed it for $40. So did the person in front of me.
So if you were waiting for it to drop in price - wait no longer.