What does Amazon Pay do well? I really love to use Amazon Pay, as a customer who uses a lot of Amazon Services, using Amazon Pay is a nice way to work with the service you have confidence. Your address books and credit cards are already save, so you don't need to typing new information. Same experience as buying in amazon.com
What does Amazon Pay not do well? I don't have complains about it, but I will to see it more in other websites, as currently looks Paypal has control over the market, will like to see more websites using amazon pay.
What do you wish you had known about Amazon Pay before using? I think there's not so many information about Amazon Pay. It's really good service, but not seeing it really promoted it.