Actually the initial cost is small compared to the up keep. She holds 700 gal of diesel and Marinas are about $.50 highe per gallon than gas stations. At cruise the twin Cummins produce 635hp each at 35gal per hour. Then there are dock fees. Saturday I HAVE to winterize which means 15 gal of Delvac oil, engines and generator, filters air, oil, fuel/water separators, and about 25gal antifreeze for the water, engines, generator, and air conditioner. Like having a wife and kids