Why would a baseball stadium limit the number of $1 hot dogs per customer on Dollar Hot Dog Night? Find out as we work on this intriguing question posed by a curious high school student named HJ. Through the lens of transaction costs, we reveal how these promotional events are less about selling hot dogs and more about enhancing the overall (cheap!) game experience to attract new fans. Using a real-life example from a recent Mets game, we explore how such promotions can change the crowd dynam...