Groupon offers the refurbished Samsung 55" 4K 2160p 120Hz WiFi LED-Backlit LCD Smart Ultra HD Television, model no. UN55KS8000, for $729.99 with free shipping. That's $169 under our May mention of a new unit and the best price we've seen in any condition. (It's also $170 under the lowest price we could find for a new unit today.) It features a 3840x2160 native resolution (4K), WiFi, USB, Ethernet, Smart TV apps (Netflix, Amazon Instant Video, Android games, etc.), and four HDMI inputs.

Also available is the refurbished Samsung 65" 4K 2160p 120Hz WiFi LED-Backlit LCD Ultra HD Smart Television, model no. UN65KS8000, for $1,049.99 with free shipping. That's $217 under our May mention of a new unit and the lowest price we've seen in any condition. (It's $250 below the best price we could find for a new unit today.) It features a native resolution of 3480x2160 (2160p), 120Hz refresh rate, Smart TV apps, three USB ports, and four HDMI ports.

Note: A 90-day Samsung warranty applies to both.