Lucky Dog Electronics via eBay offers the open-box Samsung 51" 600Hz 1080p Plasma HD Television, model no. PN51F5350, for $689.99 with free shipping. That's $810 off and the lowest total price we could find. Features include 1080p resolution, 600Hz refresh rate, USB connectivity, and two HDMI inputs.

Note: This is a new, unused item but may be missing the original packaging or be in an unsealed factory box. A warranty applies, but it's unclear who backs it.