Walmart offers the refurbished Samsung 54.6" 4K HDR Flat LED Ultra HD Smart Television, model number UN55MU800D, for $449.99 plus $19.97 for shipping. That's tied with last week's mention and as the best deal we've seen. (It's also a low now by $118.) Features include:

3840x2160 (4K) native resolution

HDR Extreme

802.11ac wireless & Bluetooth

Smart TV with Apps (including Netflix, Amazon Video, Hulu, more)

voice control

3 USB ports & 4 HDMI inputs

Note: A 90-day warranty applies, although it's unclear who backs it.