My friend got this one in an interview recently: "How would you estimate the annual revenues from a sports-outlet in a given city?" They gave the name of the outlet (which you probably dont know as it is a national player in Sweden), but it is a large chain known for all of their big warehouses. They buy in large quantities, and hence can sell at lower prices. However, this is not very relevant as I understand it. Anyways, they just wanted to know the revenues from ONE of these warehouses annually.
I wish I could give it a shot here so you can adjust my apporach, but I rally dont know ho wto approach it. There are thousands of different products, with different prices, so to me this seems almost impossible. Maybe you could look at the average number who walks in the front door, but again, the prices of the thousands of products are so different, so it does not make any sense to make an average price.
How would you guys approach this one?