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I guess the issue is that you have to store the CC number?

With Braintree you could put customer CC numbers in their vault and then manually run the transaction later, but it'd cost you a flat fee plus a penny or two per/card/month. (They do support running validations without completing a transaction.) It doesn't seem like the end of the world, though. And the architecture isn't super complicated. I assume you already had to handle telling Amazon whether to go through with the charge or not after the time period? Maybe Amazon also was keeping track of the pledge amounts for you?

(Contrib Id or Card Id, Pledge Amount, Campaign Id) doesn't seem like that crazy of a thing to store on your own system.




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