The Bargainist is reporting that the Wii is currently in stock for $250 at their online site. I just confirmed at 3:50pm Central Time.
Hurry though, they'll probably not last long!
UPDATE: Looks like their sold out online. You might still check to see if your store has one using in-store pick-up. There aren't any in the Kansas City area where I live, but there might be one near you.
If their already sold out by the time you're reading this, here's some other ideas on finding a Wii in stock