While there is not a way to switch the Mastercard with an instant Amazon e-gift card, there is a very simple way to purchase an Amazon e-gift card with the Mastercard you have received, just simply follow the steps below!
1. The first step you'll want to follow is to go to Amazon.com and in the search bar, look up "Amazon gift card". When the recommended options are presented, please click "In Gift Cards" which shows in small grey letters right below your search.
2. Next you'll see the screen that we show below and you'll want to select the style of Gift Card you'd prefer. The style of Gift Card does not impact your value. As show in the screenshot below, these Gift Cards are all electronic, so you won't have to wait for them to be shipped to you. The code will be emailed right after the purchase.
3. On this next screen you'll be able to choose what amount/balance you'd like your gift card to be. You will first select the design you'd prefer and then choose the amount. You'll see that there are pre-selected options available in $25, $50 and so on. On the very right you can choose your own amount. Ensure you choose the amount equivalent to the value of your Mastercard.
4. Once this step is complete, you can then add your gift card to your cart and proceed to checkout. In the checkout screen, it will ask you for your payment information. At this point you can input the Mastercard by clicking on the "Add a credit or debit card" button to finalize your purchase for an Amazon gift card!
After the purchase has been finalized, you will be emailed immediately with the Amazon gift card information.