Titanic’s Most Expensive Suite vs. The Cheapest Cabin Did You Know? 🧐 On the RMS Titanic, the difference between luxury and simplicity was extreme. The ship’s most expensive accommodation was the First-Class “Millionaire’s Suite” (also called the Parlour Suite), costing up to $4,350 in 1912—equivalent to over $125,000 today. These suites had private bedrooms, a wardrobe room, a sitting room, and even access to a private promenade. Only the wealthiest passengers could afford this kind of luxury.