That used to be true, but it was ruled illegal and so it is not anymore. See https://www.washingtonpost.com/business/capitalbusiness/as-rules-change-more-retai

That used to be true, but it was ruled illegal and so it is not anymore. See https://www.washingtonpost.com/business/capitalbusiness/as-rules-change-more-retailers-offer-discounts-for-cash-payments/2013/06/29/d4c84d7a-dcfc-11e2-bd83-e99e43c336ed_story.html?noredirect=on&utm_term=.6e45a190c290 https://www.washingtonpost.com/business/capitalbusiness/as-r...