Amazon offers the Sharp AQUOS 80" 120Hz 1080p WiFi LED-Backlit LCD Smart HD Television, model no. LC-80LE642U, for $2,599.99 with free shipping. (Costco charges its members the same price.) That's the lowest total price we could find by $240. Features include a native resolution of 1920x1080 (1080p), 120Hz refresh rate, full array LED backlight, 802.11n wireless, Smart Apps, dual-core CPU, web browser, Ethernet, USB, content streaming via VuDu, Netflix, and CinemaNow, and four HDMI inputs.

Note that, for Amazon, this item will ship in one to four weeks.