"70’s model snap on tool boxes. Lasted through 3 generations and one major shop fire. Any idea as to what they costed when new? Searched the web and can’t find a old catalog with prices. Just curious and my 70 year old grandfather can’t remember what he paid."
Just that most people will never quite get to see those as it both lies well outside of most people's budget and is just not needed for the average owner.
I looked up a fully serviceable freestanding fridge once, it had 20 year full warranty, made from stainless, with two separate compressors etc but it also cost about x10 times more than "ordinary" fridge/freezer that just gets the job done.
"Professional" washing-machines for laundry rooms have similar price point (about x10 times the price of "normal" washing machine), take larger wash loads while having same-ish overall dimensions and will run "nearly" trouble free for decades easely and are made to be quickly serviceable by replacement of standardized modules from the manufacturer.
The word is "BREAK."