Has the prospect of KitKat and streaming PC games from anywhere not sold you on NVIDIA's SHIELD gaming machine? Not even the promise of Portal? Well aren't you hard to please. How about a price cut, bringing the final retail cost of the SHIELD down to $199? That's cheaper than the Nexus 7, and it puts the SHIELD in the same range as dedicated gaming portables like the PlayStation Vita and the Nintendo 3DS.