Simply locate the item you wish to purchase, go to the checkout, and enter the gift card code in the “Gift cards, coupons, or eBay Bucks” section to use an eBay gift card. To finish the transaction, click “Apply” and verify your payment. Here’s a more thorough explanation: Locate your item: Look through eBay’s website to locate the item you wish to purchase. Go ahead and check out: After locating the item, put it in your cart and go to the payment page. Enter the code for the gift card: Enter your gift card code in the “Gift cards, coupons, or eBay Bucks” field after scrolling down to the checkout page. Use the code: To view the discounted total, click the “Apply” button. Verify and make payment: Verify your payment and review the specifics of your transaction.