No, by law and industry standard, handicap-accessible staterooms on cruises are not more expensive than standard rooms of the same category. Under the Americans with Disabilities Act (ADA) for U.S.-based lines and general international maritime fairness guidelines, cruise lines cannot charge a "disability premium" for accessible cabins. In fact, these rooms are often highly coveted because they are significantly larger than standard cabins to allow for wheelchair turning radiuses and include modified bathrooms with roll-in showers and grab bars. However, because there are only a limited number of these rooms on each ship, they are strictly reserved for passengers who truly need them. You are often required to fill out a "Special Assistance" form confirming your need for the features. One potential "hidden" cost is that if the specific category you want (like a cheap Interior room) has all its accessible units sold out, you might be forced to book a higher, more expensive category (like an Oceanview or Balcony) if that is where the remaining accessible inventory is located.