Amazon offers the Seiki 50" 4K2K 2160p LED LCD HD Television, model no. SE50UY04, for $625.37 with free shipping. That's a $33 drop from earlier today and the lowest total price we've seen for any 50" 4K TV. (It's a current low by $40, but most stores charge over $1,000.) It features a 3840x2160 resolution — four times that of 1080p TVs. It also has a 120Hz refresh rate, LED backlight, and three HDMI ports.