Walmart offers the refurbished Hisense 50" 4K 2160p WiFi LED-Backlit LCD Ultra HD Smart Television, model no. 50H8C, for $279.99 with free shipping. That's $39 under our mention from two weeks ago and the lowest price we've seen. (It's also $190 under the best deal we could find for a new one.) It features a 3840x2160 (2160p) native resolution, Smart TV apps (including Netflix and YouTube), USB 3.0, and four HDMI inputs.

Note: A 90-day warranty applies, but it is unclear who backs it.

Update: Specs corrected.