Greg owns a comic book store and buys his comics from a comic book factory in Quinton junction. Several of Greg's customers request a special-edition of a comic book with a gold cover on it. Greg contacts his supplier and orders the comics for his customers. After Greg emails his customers that the comics are in the store, the customers pick up the comics. They all start reading them before they leave his store. Describe the three steps of the want-satisfaction chain. Use an example from Greg's comic book store to explain each of the three steps in the process.