Zenith Z50PV220 50" Plasma HDTV for $522.49 shipped.  Here is a screenshot for your reference.  Be sure to remove the automatic protection agreement to see the price.  It features a 1920 x 1080 (1080p) resolution, 600Hz refresh rate, 2,000,000:1 dynamic contrast ratio, and input options for HDMI, component and more.