Walmart offers the refurbished Samsung 54.6" 4K 2160p Curved LED-Backlit LCD Ultra HD Smart Television, model no. UN55JU6700, for $589.99 with free shipping. That's $10 under our November mention and the lowest total price we've seen. (It's also $791 below the best price we could find for a new model.) It features a 3840x2160 (2160p) native resolution, curved design, 802.11ac wireless, Smart TV apps (Netflix, YouTube, Hulu, more), USB, and four HDMI inputs.
No warranty information is provided.