The post Retiring on a Cruise Ship Costs Less Than You Think. Until It Doesn’t. appeared first on 24/7 Wall St.. The pitch shows up in your inbox every few months. Some retiree did the math on a small interior cabin, multiplied it by 365 days, compared it to their assisted living quote, and concluded that a permanent cruise berth is cheaper than a two-bedroom in Sarasota. The spreadsheet looks convincing. Can this actually work as a real retirem…