Rout.com is the place to find the Best Cyber Monday Deals and the best deals every day of the year. This site continually tracks over 100 million products from all your favorite stores including Amazon, Think Geek, Best Buy, Newegg, Target, Walmart, and hundreds more. Every week they monitor price drops on millions of products. For each item they compare the new price to the past prices to figure out the best deals, which are presented to you for easy browsing.
Be sure to sign up for a free account to take full advantage of all the features. For example, you can set a price alert for any item and they will automatically notify you when the price drops to your desired level. You can also save items into collections called showcases, and browse them any time in the future to see what is currently on sale among products you are specifically interested in.