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by _s 2332 days ago
The operating costs for air or sea going vehicles is a lot of the time - at minimum - their purchase price, per year.

Buy a kayak for $100? You need around $100/yr in storage, cleaning and upkeep for it.

Buy a glider for $10k? You need around $10k/yr in maintenance, hangarage, taxes, insurance etc.

Buy a jet for $1M? You’ll spend that much on a hanger, crew, fuel, taxes, mechanics, parts, insurance etc etc.

Get an aircraft carrier for $1B? You’ll spend that much on crew, ports, maintenance, munition, training etc etc.

Sure you _can_ do it cheaper, but it’s a good rule of thumb from a budgetary point of view.