Walmart offers the refurbished Vizio SmartCast 70" 4K HDR Flat LED Ultra HD Smart Home Theater Display for $649.99. Opt for in-store pickup to drop that to $643.43. That's tied with our mention from three weeks ago and the lowest price we've seen. (It's the best deal for a refurb now by $150.) Buy Now Tips A 90-day warranty is included, but it's unclear who backs it. Also, this does not include a TV tuner. Features 3840x2160 (4K) native resolution Dolby Vision HDR adaptive LED backlight 802.11ac wireless and Bluetooth 4.1 integrated Chromecast 4 HDMI inputs