You can't value boats using the same method that you value cars. There are far fewer boats than cars, which dramatically reduces the accuracy of an average. There are also far more "options" that you find with a boat than with a car. There is also no odometer with a boat. The equivalent engine
hours with a boat has far less relevance to its value than you find with a cars mileage.
Boats also do not have an equivalent end of life like you find with cars. Many boats are worth replacing worn equipment
and upgrading. Most cars are not worth upgrading or repairing when something major breaks.
In my opinion the BUC valuations are wild estimates because of all the variables in value that come with a boat.