Walmart offers the Vizio D-Series 55" 4K HDR Flat LED Ultra HD Smart Television for $339.99 with free shipping. That's $138 off list and the lowest price we could find. (For further comparison, it was $20 less three weeks ago.) Buy Now Features 3840x2160 (4K) native resolution Vizio SmartCast with Chromecast & Vizio WatchFree 802.11ac wireless USB port & 3 HDMI inputs remote control via smartphone with the SmartCast mobile app Model: D55x-G1