I've bought so many things using this website. They list daily lowest price for millions of products across many online stores -- amazon, bestbuy, macy's, target, walmart, etc. I installed their add-on and always check the price history whenever I'm trying to buy something at amazon to see if it's a good time to buy. I've also used the "set your target price" feature and bought my wii fit plus board when I got the email notification that it had dropped below my target price. Overall a great tool to have for online shopping!