PayPal Digital Gifts is giving a $5 eBay gift card for every purchase of a $100 eBay gift card. So you’re paying $100 to receive $105 in eBay gift cards, slightly less than a 5% discount.
The problem is that there’s a limit of one per customer. But you can use a Chase Ink to earn 5x UR points since the seller is PPDG. This can be combined with the current 4x eBay Bucks promotion if you were lucky to get the email.