sfb wrote:
Except there the "blue book" on new property is the manufacturers list
price.

I said that. New items are valued at the MSRP (regardless of how
inflated that might be over what the actual VALUE of the item is).

The challenge with a new plane loaded with expensive extras is that it
is unique so willing buyers may be few since they can buy the same plane
new and upgrade it as they choose making the fair market value approach
list prices.

This is NOT a new aircraft. It's a 1974 aircraft that they've been
overhauling.