Heads up, deal hunters! Amazon's got a sneaky good offer right now: you can snag a $100 Mastercard gift card for just $99.59. That's thanks to a 6% coupon that's automatically applied at checkout. Why should you care? Well, if you're strategic, this is basically free money. Think about it: If you have a credit card that earns bonus points or cashback on Amazon purchases (like 5% back with the Amazon Prime Rewards card), you're stacking savings. Plus, Mastercard gift cards are pretty much as good as cash, so you can use them anywhere Mastercard is accepted. A couple of things to keep in mind: There seems to be a limit of 37 gift cards per customer, and these deals tend to disappear fast. So, if you're interested, jump on it quickly! It's a great way to pad your travel fund or just get a little discount on everyday spending.