Camelcamelcamel - Easily monitor Amazon product prices and get alerts when they drop.
Lolli - Earn bitcoin when you shop online
PriceSpy - PriceSpy helps you save money when shopping online.
Paribus - Find out for free if online stores owe you a refund!
Savelist - Found products you want but not ready to buy?
Slice Watch - Get an email when an item you've added drops in price 💸