American Express Co. announced Monday upcoming upgrades to its U.S. Consumer and Business Platinum credit cards, aiming to distinguish itself in the competitive luxury credit card market. “More than forty years ago,

The price jump is part of an ongoing shift for credit card companies and airlines toward premium rewards and high-end travelers.

The new rewards card is raising its annual fee to almost $800, but cardholders must spend $75,000 to unlock its best perks. How to tell if the card works for you.