Walmart offers the refurbished LG 55" 4K 2160p LED-Backlit LCD Ultra HD Smart Television, model no. 55UF6450, for $449.99 with free shipping. That's the best we've seen in any condition and $200 under the lowest price we could find for a new unit today. It features a 3840x2160 (4K) native resolution, webOS 2.0 Smart TV system, USB, and three HDMI inputs.
No warranty information is provided.