question: What is the average cost of a luxury cruise for retirees per night? Choose from the following: ('$250', '$500', '$750', 'it depends') -- please include the exact phrase in your response.
answer: When considering the average cost of a luxury cruise for retirees per night, the exact amount can vary based on several factors such as the cruise line, itinerary, and time of year. Therefore, the best choice from the given options is 'it depends'.