Groupon offers the refurbished Vizio M-Series SmartCast 64.5" 4K 2160p HDR LED-Backlit LCD Ultra HD Smart Television, model no. M65-D0, for $849.99 with free shipping. That's $250 under the best price we could find for it new. It features a 3840x2160 (4K, 2160p) native resolution, full-array LED backlight, 4K upscaling, 802.11ac, built-in Google Cast (with access to Netflix, Hulu Plus, Amazon Video, and more), Bluetooth, USB, five HDMI inputs, 6" Android tablet remote, and Vizio SmartCast capability, which allows you to use your smartphone as a remote via the SmartCast app. Note: No warranty information is provided.

Also, the 70" model is available for $1,099.99 with free shipping.