Not really vintage, but the most ever spent on a vac, Back in 1989, About 600 dollars for a new Beam Central Vac, plus installation of 3 inlets, hose and attachments.
Did pay about 600 for a new Kirby G4, back in 1994,when they were brand new.
( Was way before getting a PC, having the internet, or E-Bay)
Told the dealer i would pay 600 IF the Kirby was sealed in the box, brand spanking new, directly from the factory, never opened, and that the G4 had the 80th Anniversary logo on the handle.
He assured me over and over that it was.
Had to leave town suddenly on business right after paying for it,, so,
When i went to open the box a few days later,,of course the Carpet Shampoo System brush was full of lint,there was residue of water and shampoo in the tank, and you could tell the brush roll of the carpet nozzle itself had been slightly used. And of course a slightly used bag was still in side the outer bag.
And, NOT anniversary model.
I called to complain, but was more than 72 hrs after the sale,,and the paperwork had been signed,,so they just laughed at me.
Learned a lesson that day,,NEVER again!