I have been using an Add-on for Chrome for a while now called Honey. Honey is a browser add-on that automatically clips online coupon codes so you always get the best deal. It will also scour websites for a cheaper price, allowing you to see if there is a better deal from another site or another re-seller. There are a few other nifty features like keeping track of price history, and also allows you to add items to a watch list, automatically notifying you of price drops so you can buy when the time is right. I give this useful add-on a 10/10 for its ease of use and ability to save a lot of money, especially for birthday and Christmas shopping.
It is compatible with most web browsers.
You can install Honey on:
You can also directly install from their website JoinHoney.com!