30Hz 3840 x 2160 television prices have dropped in recent months:
Seiki se50uy04: 50", ~$1100 at Amazon
Seiki se39uy04: 39", ~$700 at Amazon and Sears
Skyworth: 50", reportedly ~$1500, reportedly supports 3D, maybe only sold in China
Skyworth 39e780u: 39", reportedly ~$600, maybe only sold...