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I'm confused, so say I put this button/form on my site.

How does my app tell the button the final price?

How does the button send the token to my app?

What does the user see after they pay? Does the button display its own receipt or do I build that?

The charging isn't done on the client, it happens later on the server. All this checkout does is turn a user's credit card into a token that you can safely send to your server. Then, server side, you can charge the card or sign the user up for a subscription.

So, in other words the price is client-side, and only used for display. The token gets submitted in a form to your server. And you build the receipt page.

Are customers not concerned that stripe is storing their CC info for any use in the future?

I normally uncheck the "Save This Card" option, with Stripe they don't allow this.

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