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Re:Visa and Mastercard agree to lower average credit card in... by kelnos on Friday May 19, 2023 @04:07AM (#35999116)
That doesn't work in a brick and mortar store where they wouldn't know your card's fee until you go to pay.

Also doesn't work online if you're not signed in, or if it's the first time you've visited that store and you haven't given them a card number yet.

Re:Visa and Mastercard agree to lower average credit card in... by kmlx on Friday May 19, 2023 @06:30AM (#35999919)
but they would know how much tax the customer would have to pay.