PriceZombie
Price Zombie is a price tracker for Amazon and so much more. PriceZombie lets you see full price history on millions of products across dozens of different stores including Amazon, BestBuy, HomeDepot, Ikea, Target, and many more! PriceZombie now also features plugin support! Simply browse a supported retailer's site and click on the PZ button to see price history charts and prices from other retailers or add an item to your wishlist.