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

Agreed on Aerial Acoustics!

XStatic full range electrostatics as there were less than 100 pairs made (awesome sound BTW).   Triangle Stratos Volante 260 is another great speaker as was Gale.   I also don't see a lot of Ohm's higher-end speakers for sale.   All of which I still own or owned.

Snellc5 bought them in 1997 still listen to them ever day. Just purchaset a McIntoch MC452 can’t wait to get it hook up to old Snells 

Three_easy....yep I’ve been keeping my eye out for D7s or D9s for some time now, rarely happens. I think it’s because there just aren’t lot of them in the US, plus owners hang on to them. 

There have been a few pair of Wilson Sabrinas lately. Have only seen two pair of 0/96 in the past year, and one of those wasn’t here. A few more 0/93.. Two pair of JA Puslars popped up in the last month or so and were gone fast, and one of those was a realist. That pair of JA Pearl 3 had been on here a couple times in the past from the same seller, but at higher prices. Have seen just two pair of Quattro CT’s in about a year here.