Pricepeek - Compare prices of the same product across all Amazon locales
Camelcamelcamel - Easily monitor Amazon product prices and get alerts when they drop.
Savings.com - Compare prices at local stores & discover the best deals
GlassIt.co - Find discounts, without invasion of your privacy. Download Glass It Price Tracker mobile app or browser extension 🇺🇸
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Pricy - Amazon price watch