For in-store pickup only, and with stock varying by ZIP code, Sears offers the Seiki 50" 4K2K 2160p LED LCD HD Television, model no. SE50UY04, for $599.88. That's $7 under our mention from three weeks ago and the lowest price we've seen for a 50" 4K LED HDTV. (It's a current low for this model by $300.) It features a 3840x2160 resolution — four times that of 1080p TVs. It also has a 120Hz refresh rate, LED backlight, and three HDMI ports.