What forms of payment do you accept? April 22, 2020 14:40 Updated CheckMateMagazines.com currently accepts Visa, MasterCard, Discover, and American Express for all orders. Related articles When will this be back in stock? Can I order samples? What shipping carrier do you use? Does Check-Mate offer a MIL / LE discount? How long does it take for a refund to appear on my card?