Rewards Cards: Consumers Love 'Em, Retailers Don't

Consumers love the free flights, gadgets and cash back they get when they pay with their rewards credit cards. But mom and pop stores cringe when they do.

It costs a merchant more each time a consumer pays with -- or "swipes" -- a rewards card than when a consumer pays with a basic credit card.

Forty percent to 70% of credit card transactions are made with rewards cards....

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