Heads up, deal hunters! Amazon's playing Santa early by offering a sneaky discount on Mastercard e-gift cards. You can snag a $100 Mastercard e-gift card for slightly less than its face value. Why should you care? Basically, it's like free money! If you shop at Amazon anyway (who doesn't?), you're getting a discount on future purchases. Plus, if your credit card gives you bonus points or cash back for Amazon purchases, you're stacking the savings. Keep in mind these deals tend to disappear faster than cookies on Christmas Eve, so act fast! There's a limit to how many you can buy.