An eBay Gift Card is a prepaid gift card, with which you can purchase items on the eBay site. You may use it only on United States accounts.
HOW TO USE EBAY GIFT CARD (US)?
1. Log in to your eBay account.
2. Click "Pay Now" for the item you're buying.
3. Enter the 13-digit redemption code, then click "Apply".
4. Click "Continue" to proceed to PayPal.
5. Log in to your PayPal account.
6. Review the payment details and click "Confirm and Pay".