TigerDirect offers the Seiki 65" 4K Ultra 2160p LED LCD HD Television, model no. SE65UY04, for $999.99. With free shipping, that's the lowest total price we could find by $304, although we saw it for a buck less via in-store pickup in August. It features a 3840x2160 resolution — four times that of a 1080p TV. It also has a 120Hz refresh rate, LED backlight, and three HDMI ports.
Update: This $100 mail-in rebate cuts it to $899.99 with free shipping.