To keep yourself safe, keep a good record of whatever information you have submitted to the website, and make sure to protect your personal details as much as you can. Be sure to ask the right questions and do so before you give out your gift card details. For a seller, the risk is high for them as fraudulent purchases are their worst enemy. Learn how your comment data is processed. How to use your Amazon Gift Cards to buy Bitcoin? There is no added extra fee for the purchase of Bitcoin gift cards.