Newegg via eBay offers the Samsung 40" 4K 2160p LED-Backlit Curved Smart Ultra HD Television
, model no. UN40JU6700, for $797.99
with free shipping
. That's the lowest total price we could find by $100. It features a native resolution of 3840x2160 - four times that of 1080p TVs, LED backlight, WiFi, Smart TV apps (YouTube, Netflix, Hulu, etc.), USB, and four HDMI inputs.