InvisibleHand for Firefox

Developer's DescriptionBy Forward Internet GroupFind the lowest price on hotels.InvisibleHand automatically finds the lowest price on hotels, regardless of which travel site you use. It also provides one-click access to verified hotel reviews, and hotel amenity info.InvisibleHand automatically finds the best prices on online shopping, flights & hotels in US, UK & Germany.Checks for better prices and automatically shows a discreet notification when you're browsing a product which is cheaper at another retailer, or searching for a flight Currently supports over 580 US, UK & German retailers, and over 589 airlines. Also provides one-clicks access to product reviews about the product you're browsing.