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robotsquirrel t1_j1ratdg wrote

Reply to comment by ghx16 in U.S. orders Mastercard to stop blocking competing payment networks by HRJafael

That's cool. It doesn't change the fact I used a Discover card in one state and a completely different one a year later at a brand new Costco.

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ghx16 t1_j1ree09 wrote

Well I can't find any info before 1999, which was the year Costco signed its exclusive agreement with American Express, so it was either before that year or you used a debit Discover card, since to this day Costco takes debit cards on any of those payments networks

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