Sears offers the Seiki 50" 4K2K 2160p LED LCD HD Television, model no. SE50UY04, for $699.99. Choose in-store pickup to dodge the $69.99 delivery fee. That's the lowest price we could find by $70, although we saw it for $75 less three weeks ago. It features a 3840x2160 resolution — four times that of 1080p TVs. It also has a 120Hz refresh rate, LED backlight, and three HDMI ports.