Yes, Bob - it seems totally crazy to me also.
But, a short while ago, someone mentioned a Cox .049 selling for over $900.00.
Same with cars. A limited production street/racing car, one of 36 made, recently sold for $70,000,000.00.
That's SEVENTY MILLION DOLLARS!! It sold brand new in 1963 for under $12,000.00. In 1967 or 68 one sold for $3,500.00.
The SAITO 30 by the way is one of my all-time favorite engines.
I think I paid around $170.00 new.
Bob Z.