6th Avenue Electronics drops the price of this Panasonic 42" Plasma HDTV to $643.90 after code BONUSBUY. With free shipping, this beats Walmart.com's price by $44. This TV features a 2000000:1 dynamic contrast ratio so the colors are crisp and the picture is clear. Plasma TV's have a very high refresh rate as well, making them great for sports and action movies. Unlike at Walmart, however, there is no sales tax (except CA, MA, MD, NY, and TN).