I'm a Kirby owner!
Owner had a $35 offer before me. I ran it on their plush carpet. Pushed a little hard, and there was a little side to side play in the pivot point of the handle. Motor sounded good - no funny noises, and not loud. Rug renovator, floor tools, and manual were in good shape. Offered $40 and took it home.
Bought a "classic 3" handy butler on eBay for $22.20. Nice red housing seems to match my vacuum.
There is a local guy that has a bunch of Kirby parts for the classic, heritage 2, and legend 2. He used to collect them, but lost interest. I have some pictures of his stuff - which includes a turbo sander / polisher, turbo brush, a big pile of attachments, a classic bag with emptor attached, and heritage bag with emptor. Hmmmm. He'd like to sell all. I'll stop by late this week to check it out.