I am constantly receiving Amazon gift cards as a thank you from various people, which I love because I know I will be able to redeem them quickly. But sometimes the cards don't have an amount printed ...
Know the rules, then use them fast: Balances last 5 years; inactivity fees after 12 months; some states cash out small leftovers (e.g., CA $10) Buy low, sell smart: Warehouse clubs = easy 20% off; ...