It is not an easy question. Around 1992, I was asked by the department dealing with a salvage claim by a Norwegian fisherman, "How much does a Sea King cost?" I can't recall the details, but a Mk3 had ditched, in the North Sea I think. But they wouldn't tell me this - just posed the exam question without context.
My reply was, what Mark, and at what build standard? And based on a production run of how many? Her reply was, "A one-off, of the dearest one, as we don't want comebacks". I said £35-40M for a new one; but the question was purely hypothetical as Westland would never accept such a contract, or even bother providing a quote. She was happy. In truth, I hadn't the foggiest, but I knew very precisely what an avionic fit cost in each one, and it was frightening. The V/UHF radios were £130k each, for a run of 600. What would a one-off cost? Presumably he's still buying rounds every night.