What are the speakers you very rarely find in the Used market(Audiogon or Anywhere)?


I'm looking for Vandersteen Quatro CT, Wilson Sabrina or DeVore Fidelity Orangutan 0/93 or 0/96. I rarely find it or in some cases, before I make an offer, it is gone. What other speakers are a rare find?
karurravi
I have seen recently only one pair of Pulsars up on the 'Gon. I have not seen too many of them for sale here or elsewhere. I could be wrong, but that is my experience.
Any mbl speaker.
Any music culture speaker.
Diapason rarely but have seen 2 pair in 4 yrs.