Track prices on Amazon and Steam you think are currently too expensive and get notified once they drop to a price you specify.
NOTE: This extension is no longer under active development.
When you see a product that's currently more expensive than you're willing to pay, That is Worth allows you to specify a price that you think the product is worth and then notifies you if the price drops below that value.
No registration required - everything happens in your browser.
Works on Amazon and Steam.