BuyDig offers the Seiki 39" 4K2K 120Hz 2160p LED-Backlit LCD HD Television, model no. SE39UY04, for $699. Coupon code "UHD4K" cuts it to $569. With free shipping, that's $70 under our August mention, the lowest total price we could find by $130, and the least expensive 4K Ultra HDTV we've seen. It features a 3840x2160 resolution — four times of 1080p TVs. It also has a 120Hz refresh rate, LED backlight, USB, and three HDMI ports. Coupon expires November 6.