Walmart offers the refurbished Vizio SmartCast E-Series 64.5" 4K 2160p LED-Backlit LCD Ultra HD Smart Home Theater Display, model no. E65-E0, for $549. Opt for in-store pickup to dodge the $49.97 shipping fee. That's $336 less than the lowest price we could find for it new. It features a 3840x2160 (4K, 2160p) native resolution, full-array LED backlight, 802.11ac wireless, built-in Google Cast (with access to Netflix, Hulu Plus, Amazon Video, and more), USB, four HDMI inputs, and Vizio SmartCast capability, which allows you to use your smartphone as a remote via the SmartCast app.

A 1-year warranty applies but it's unclear who backs it.