The only thing we have here in the UK these days, is the Midlands Model Engineering Exhibition at the Warwick Exhibition Centre (used to be one at Alexandra Palace in London too, but that hasn't reappeared since COVID). You do get used machines and tooling for sale at the Midlands exhibition but only on dealers' stalls. There doesn't appear to be any facility for joe public to set up a stall.
If I lived in the US, it would be inked in red in my calendar, and god forbid any family member dying, having a funeral or giving birth on those days!