Walmart offers the refurbished Vizio 55" 4K 2160p LED-Backlit LCD Ultra HD Smart TV, model no. M55-C2, for $629.99 with free shipping. That's $90 less than our mention of a new one from a month ago, and $138 below what you'd pay for a new one today. It features a 3840x2160 resolution (four times that of 1080p), 120Hz refresh rate, WiFi, Internet Apps (Netflix, Hulu Plus, Amazon Video, more), and five HDMI ports.

No warranty information is provided.