Easy, about $10K for a C206.
Different companies do it different ways. We charge a flying day rate, and a non-flying day rate plus all costs at exactly cost.
The day-rate system reduces pilot pressonitis (not good for pilot or client), whilst also encouraging forward movement when safe/possible (he still gets paid more to fly than hang around in a hotel).
The costs protect us from any surprises, and the client only pays what needs to be paid.
So, actually pretty simple. Certainly way below the value of most aircraft, and usually cheaper (and always much, much quicker) than de-winging and shipping.
Also a lot of fun - the trans-atlantic remains one of my favourite ferries.
Safe flights, Sam.