Walmart offers the Vizio SmartCast M-Series 54.6" 4K HDR Flat LED Ultra HD Smart Display for $448 with free shipping. That's $100 off and the lowest price we could find, although we saw it for $50 less in December. Features include:
  • 3840x2160 (4K) native resolution
  • 802.11ac wireless
  • SmartCast OS with Chromecast (with access to Netflix, Hulu, Amazon Video, more)
  • remote control via mobile device with the SmartCast app
  • 4 HDMI inputs