Walmart the Vizio 50" 4K HDR Flat LED Ultra HD Smart Television, model no. D50x-G9, for $298 with free shipping. That's $130 off and tied with our mention from last week as the lowest price we could find. Features include:

3840x2160 (4K) native resolution

Dolby Vision HDR (with support for HDR10 & HLG)

802.11ac wireless

SmartCast OS with Chromecast (with access to Netflix, Hulu, Amazon Video, more)

USB port, 3HDMI inputs

remote control via mobile device with the SmartCast app