PriceDrop is a browser extension for Firefox and Google Chrome which allows you to track product prices at Amazon and Best Buy shops , and get notifications whenever they drop - straight into your browser.

PriceDrop will let you know when the price of your favorite products goes down.

After installing the extension, go to a product's page at an Amazon shop or at Best Buy, and start tracking it.

If the product's price drops, you'll get an alert about it.
PriceDrop will keep watching for future price drops.

You can review the list of your tracked products at any time, by entering the PriceDrop menu.