Provantage offers the Vizio SmartCast 55" 4K 2160p WiFi LED-Backlit LCD Ultra HD Home Theater Display, model no. E55-E1, for $357.35 plus around $49 for shipping. That's the lowest total price we could find by $52, although we saw it for $8 less last November. It features a native resolution of 3840x2160 (2160p), Vizio SmartCast technology with integrated Google Cast, USB, and four HDMI inputs.