Honey - Honey is a browser extension that automatically finds and applies coupon codes at checkout with a single click.
AverageFinder - AverageFinder is an all-in-one product value tracking service for eBay that will provide all the information related to product selling and purchasing.
Shopzilla - Shop smart and shop fast at Shopzilla!
Auction Price Finder - Check the current value of any item on ebay, based on the last sales.
Price Snoop - When viewing a product on Amazon, Price Snoop will show you just how much it costs on the other...
PRICEFY.IO - Monitor your competitors' products and prices with ease. No single URLs to paste or proxies to rotate, just put your competitor's domain and monitor his product's price daily.