Vintage Motorsport magazine has a section called "Auction Action" where it reviews race cars and other things motoring that have sold at auctions.
This month (Jan/Feb) had a spotlight on a slot car track. This Slot Mods track attracted "scores of bids and comments." The layout is inspired by Virginia International Raceway.
The reported winning bid was $65,500.
1/32 scale basement racing must be bigger than we've been thinking. (LOL.)