When Seiki's 4K TV set popped up on retail listings with a price that's just a fraction of what we've seen from its more expensive rivals, we were almost convinced it was a site glitch -- that couldn't be real, could it? The company would like to reassure us that it's quite serious. The 50-inch Ultra HD set is officially shipping to the US later in April, and it will still carry that regular $1,500 price tag when sales expand from TigerDirect (which claims to have stock today) to include Amazon and QVC, among others. We'd remain cautious about leaping in when Seiki is try
