Similarly, first-class air travel and economy air travel reflect different design qualities. First-class air travel, for example, offers more leg room, better meals, a more luxurious seats. Obviously, in both cases, the product features are different. Higher design quality is usually reflected in higher manufacturing costs and in higher selling prices. Quality of design helps a company determine its market. A market exists for both the four-cylinder and the six-cylinder cars as well as for both economy air travel and first-class air travel.