Lawrence was sweeping up the trimmings at the barbershop when he saw the circus posters. He knew right away that he would be taking his little cousins. They loved animals and Lawrence was looking forward to seeing the smiles on their faces. This trip was going to cost him though, and sweeping up hair clippings didn't pay a whole lot. Yet he saved until he had the 45 dollars to get the tickets. When he saw his cousins' faces, the price seemed like a bargain. Soon they walked into that big circus tent. This was the first time that Lawrence realized that he and his cousins would be thirsty and hungry. As they sat in their seats, the drink vendor walked by selling beverages. Desperately thirsty, Lawrence asked how much a lemonade would cost. The drink vendor said, "Eleven dollars each." Lawrence replied, "Oh, that's it? Just eleven dollars? What a great deal for one cup of lemonade." The drink vendor walked away. Which type of irony is used?
Explain.