Sears offers the Seiki 55" 4K 2160p LED LCD HD Television, model no. SE55UY04, for $799.99. Choose in-store pickup to dodge the $69.99 shipping fee. That's the lowest price we could find for any 4K TV, although we saw this one for $40 less three weeks ago. It features a 3840x2160 native resolution, 120Hz refresh rate, LED backlight, and three HDMI ports.