P.C. Richard & Son offers the Samsung 51″ 600Hz 720p Widescreen Plasma HD Television, model no. PN51D430, for $498. With free shipping, that’s tied with our mention from seven days ago and the best deal we’ve seen on this model. (It’s also the lowest total in-stock price we could find by $131 and the least expensive 51″ Samsung plasma HDTV we’ve seen.) Sales tax is added where applicable. It features a native resolution of 1365×768 (720p), 600Hz sub-field drive, 0.001ms response time, USB, two HDMI inputs, and VGA and other video inputs.