Walmart offers the Vizio D-Series 55" 4K HDR Flat LED Ultra HD Smart Television for $379. Opt for in-store pickup to drop the price to $375.17. That's tied with last month's mention, $99 off list, and the lowest price we could find. Features include: 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