InvisibleHand is a Firefox, Google Chrome, Opera and Safari add-on that will automatically find the lowest price on your desired products.
Moreover, InvisibleHand automatically checks for better prices and periodically showing a discreet notification when you're browsing a product which is cheaper at another retailer.
Additionally, InvisibleHand currently supports more than 580 US, UK and German retailers and over 589 airlines.
In a hurry? Add it to your Download Basket!
- Coupon notifications can now be disabled while on a retailer site