Developer's DescriptionBy Media NextCompare product prices while you shop.The PriceAdvance plugin finds better prices for the products you're browsing while you shop. Currently tracking over 4 million products at: Amazon.com, Abt.com, BestBuy.com, Buy.com, CircuitCity.com, Computers4Sure.com, eBooks.com, JR.com, Kmart.com, mwave.com, nothingbutsoftware.com, Sears.com, Target.com, TechDepot.com, TigerDirect.com, and Walmart.com. This version is the first release on CNET Download.com.