Dell Home offers the LG 50" 600Hz 1080p Plasma HD Television, model no. 50PN5300, bundled with a $100 Dell Gift Card for $549.99 with free shipping. Assuming you use the gift card, that's $100 under our July mention and the lowest total price we've seen for this model. (It's also a current price low by $129, if you factor in the gift card.) It features a 1920x1080 (1080p) native resolution, 600Hz refresh rate, USB, and two HDMI inputs.

Of note, the gift card will arrive 10 to 20 days after the product ships.