Convient
I like that Amazon has this option as a payment method.  It's very convient when you return a product, the refund takes less than 10 min to load the full refund oppose to your credit card which could take 7 to 14 business days to see the refund.  Also like the reload option and they give you a $10 bonus for doing nothing but reloading your gift card!
Rating: 5 stars