Honey App for PC. I have saved so much money using this app and have earned gift cards to my favorite stores for just using the app. It's FREE, it gets you the best prices, and it pays you back in gift cards.

While you shop on Amazon, Wikibuy evaluates other sellers like Walmart, Target, eBay, Jet, and others you might find with a Google search. It confirms availability (including size and color), price, taxes, shipping - and tests coupon codes.

I absolutely love getting new books for a great discount. With Book Outlet, you can save up to 90% off the latest book releases. You also get rewarded if you refer friends.