And these consumers often visit a retail store like Wal-Mart to find the specificitem they want, then search online to find the site with the best price.
One involves the player's character walking into a specific building, picking up an item, walking out - and then returning to find a new item has appeared.
But it is notoriously ill-suited to high-tech industries that have to tailor each item to a customer's specific needs (as in a data-switching centre or air-traffic-control system) or in which it is crucial that thousands of interrelated components all work correctly together (as in a rocket vehicle).