P.C. Richard and Son offers the Sony 49.5" 720 Series 4K LED LCD Ultra HD Smart Television, model no. KD-50X690E, for an in-cart price of $399.97 with free shipping. That's $28 under our mention from three weeks ago and the lowest price we've seen for any Sony 50" 4K Smart TV. (It's also a low for this one by $28.) It features a native resolution of 3840x2160 (2160p, 4k), Smart TV, WiFi, USB, and three HDMI inputs.