Samsung 50" (UN50J6300) 1080p WiFi LED / LCD Smart HDTV for $599.99 + Free Shipping @ BuyDig
I watched for several days while the TV sat at $699 on Amazon's site (now at $649 ), I also found the BuyDig.com site for $599.99 (includes HDMI cable - limited value, but free nonetheless).
BuyDig is also selling via eBay for $629.99
The Samsung 50" 1080p WiFi LED / LCD Smart HDTV, model UN50J6300 in-cart price of $599.99 (w/free HDMI cable) with Free Shipping. Features include 1920x1080 (1080p) native resolution, LED backlight, WiFi / Ethernet content streaming (Netflix, YouTube, Pandora, more), USB and four HDMI ports.