Usually a game only drops in price once it starts to sell poorly and this is especially rare for a Nintendo game. Mario Kart 8 has been selling well, but who knows how much the sales have dropped after everyone who wanted it purchased it or purchased it and a Wii U.
Is Mario Kart 8 doomed?
For those who want the game that don't have it yet, maybe you're interested in it at this price? Although maybe you still want to wait. Just remember you can get a free digital game as long as you register it before the end of this month(I think.)