Camelcamelcamel - Easily monitor Amazon product prices and get alerts when they drop.
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.
GlassIt.co - Find discounts, without invasion of your privacy. Download Glass It Price Tracker mobile app or browser extension 🇺🇸
Auction Price Finder - Check the current value of any item on ebay, based on the last sales.
Pricy - Amazon price watch
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.