If you keep your "spending money" in PayPal, using it for Amazon helps keep your main bank account clean.
If you don't have a PayPal card, you have to use your PayPal balance to buy an Amazon Gift Card from a third-party site (like eGifter or Dundle). It adds a 5-minute chore to every purchase.
If you have the , it’s a 5-star experience —it’s seamless. However, if you are relying on the Gift Card workaround , it’s a 2-star hassle that is only worth it if you absolutely cannot use a standard bank card.
This is the "gold standard" workaround. If you have the physical or virtual PayPal debit card, you just enter the card numbers like any other Visa or Mastercard. It works instantly and flawlessly.