Just tried looking up vintage computer stuff on my area Craigslist. I am not kidding, it is virtually all want ads from eBay scalpers looking for the stuff! Well, except one $450 TRS-80 model III.
I wish I still had my Apple ][ that I got for $5 at the Wooster, OH Goodwill 18 years ago. Good luck trying to get one now! I'm lucky I finally got a ][ plus back again.