Walmart offers the refurbished Samsung 54.6" 4K 2160p LED-Backlit LCD Ultra HD Smart Television, model no. UN55JU6500, for $529.99 with free shipping. That's $200 under the lowest total price we could find for a new one, although we saw another refurb for $30 less in August. It features a 3840x2160 native resolution (four times that of 1080p TVs), 802.11ac wireless, Smart Hub (with access to Netflix, Hulu Plus, Pandora, Amazon Video, more), USB, and four HDMI inputs.
Note: No warranty information is provided.