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The retailer sued the credit-card giant this week, claiming Visa's swipe fees are unfairly high. Separately, the retail industry has taken a hit in the fight over capping debit-card swipe fees.
The National Retail Federation appeals $5.7 billion Visa, MasterCard settlement that was approved in December.
Credit-card giants agree to pay more than $6 billion to settle an antitrust case.
As banks start charging customers who use debit cards, many owners are wondering how this might hit their wallets.