Beef is more in demand in the United states than anywhere else in the whole world. If you keep a record of the burgers and steaks cooked in the whole world, you would be surprised to find that the United states accounts for nearly 25% of the beef.
You are best giving your custom to a quality butcher rather than a generic food store. A butcher should stock more cuts than the generic grocery store, he will be more proud of the quality of his meat, is more likely to have stored it in the right manner, and will usually be pleased to help you with advice on the best way to cook it.