Since Costco has a contract with Visa, shoppers can't use credit cards backed by the other three main networks, American Express, Mastercard or Discover, at Costco warehouses. However, you're able to pay with Mastercard and Discover cards for purchases made at Costco.com and the Costco app.
Does Amazon take Discover cards?
Amazon Pay accepts credit and debit cards. Credit cards currently accepted include Visa, Mastercard, Discover, American Express, Diners Club, and JCB. The Amazon.com store card is available for use with selected merchants.
Is Discover not accepted everywhere?
Unfortunately, Discover cards aren't widely accepted outside of the United States, so they may not be the best travel credit cards to take on your next trip. Visa and Mastercard are the most widely-used card payment networks abroad, while Discover and American Express are still very much U.S. oriented.2019-01-22
Is Discover accepted anywhere?
Is Discover Card accepted everywhere? Discover is accepted nationwide by 99% of the places that take credit cards. And internationally, the Discover Global Network offers acceptance in 200 countries and territories, and growing.