Re: [w3c/payment-request] Pass SKU instead of Total (#879)

Hi all,

What if total is made available by a promise resolved later?

Payment Request could generically support such a mechanism, and how the promise resolves could be payment-method specific. The payment handler does whatever it does, then provides the merchant with the result, and the merchant can then update the payment request.

I was also wondering whether such an approach could be used for the $0 total use cases (e.g., ride sharing) or some others.

I've not thought it through but wanted to mention the concept before we meet face-to-face.

Ian

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