I went to the local Microsoft Store. Plentiful stock. Picked up Dance Central 3 for $15 and Kinect Nat Geo TV for $10.
the MS store is pricematching a lot of retailers, especially Walmart.
they also had Sesame Street TV, Disneyland Adventures, Kinect Rush: A Disney Pixar Adventure, etc. for $10.
had Dance Central 3, Forza Horizon, and Fable the Journey for $15.