From time to time I've run across people who most of the time either 1)have a severely inflated idea of what their "find" should be worth because 'you don't see them around on the road any more so parts must be too rare for them to be driven', or 2)they do not want to sell the items at this time but want to get a sense for what the marketplace would pay for the items.
This is not confined to K-F alone; the executors of the Barney Pollard estate in Detroit were extremely disappointed that the auction sale of Barney's huge collection of 1900-1920's or so old cars and trucks brought little more than scrap value. To save space, the construction company owner stacked the cars end to end in one of his yards with no decent protection from the elements. He also refused to sell individual cars when alive to those inquiring, claiming that a year or two later they would be worth more, so he'd wait until he could get the price he wanted for them.
A first hand story related to all this deals with Jaguar engines being produced at Ford Motor Company's Cleveland Engine Plant #2 c.2008 to 2013. When Jag was acquired by Tata Motors in India (along with Land Rover-they still own both today) Ford wanted to stop production of the turbocharged V-6 that went into the "baby Jag" which was built in England for sale overseas. Tata would not buy the tooling and equipment to set up the engine line at the British facility, but would pay any amount Ford wanted for them to keep building them. Ford quoted a normally impossibly high price for engines and Tata took it and the V-6 stayed in production in the west central part of the engine plant until production ended there in May of 2013. I was a resident quality engineer on that line at the time, so I know what went on.
They never got anywhere near what Mr. Pollard felt they should go for.