Best Buy offers the Samsung 51″ 600Hz 720p Widescreen Plasma HD Television, model no. PN51D430, for $499.99. With free shipping, that’s the lowest total price we could find by $70. (It’s also the best price we’ve seen for any 51″ Samsung Plasma HDTV.) Sales tax is added where applicable. It features a native resolution of 1365×768 (720p), 600Hz sub-field drive, 0.001ms response time, USB connectivity, two HDMI inputs, and VGA and other video inputs.