6th Avenue Electronics offers the Panasonic VIERA 42" 1080p 600Hz Plasma HD Television, model no. TC-P42X3, for $497.96. With free shipping, that's the lowest total price we could find by $20, outside the price below. This HDTV features a 1920x1080 (1080p) native resolution, 600Hz sub-field drive, VieraCast IPTV with connectivity to various internet video streaming sites including Netflix (Netflix subscription not included), SD card slot with VIERA Image Viewer, two HDMI inputs, and component and other video inputs.

A close price: US Appliance has it for $499 with free shipping.