Looks like Chinese have beaten japan and South Korea in a race to bring 4k Ultra-HD TV to the market, and with good price. Seiki just introduce LED 4K 120Hz HDTV with 2 year warranty for $1300.
Availabe now from ShopNBC.com:
Seiki 50" Slim LED 4K Ultra-HD 120Hz HDTV w/ HDMI Cable & Two Year Extended Warranty ShopNBC.com