Final answer:
Hall's store is likely successful due to its efficient production model and cost structure, allowing it to offer competitive prices. Economies of scale play a key role in sustainability, while 'Mom and Pop' stores exist by serving niche markets and providing personalized services.
Step-by-step explanation:
The success of Hall's store, which is likely a placeholder for a retail giant can be attributed to its production model and cost structure. These elements enable the store to offer lower prices to consumers, even when including shipping costs, thereby undercutting competitors. This practice helps attract a broad customer base and sustain its market position. Furthermore, determining what to sell, at what output, and at what price is critical in yielding successful business operations, whether for large operations like Amazon or smaller ventures like a corner deli.