As they should be--it's a much more attractive price point, especially considering the WiiU hardware will be severely out-dated in roughly 2 months time.That was quick.
Hopefully it continues to drop after Wind Waker and 3D World are released.
There sure has been a lot of $50 Wii U games recently. Donkey Kong Tropical Freeze, Sonic Lost World, and Wind Waker HD all releasing for $50.