This Samsung 51" Plasma HDTV drops from $719.99 to $649.99 with free shipping at Dell. Plus, you get 2 free pairs of 3D glasses and a $100 Dell e-gift card at checkout. This $70 off the regular price, and with the $100 gift card, it's the best overall deal we found (the lowest price we saw for the TV alone was $648, without any gift card). It features 720p HD resolution and is Energy Star qualified. The e-gift card is delivered via email after purchase. Sales tax is charged in most states.