What used speakers raraely come up for sale


Lets keep it under $7,000 used, but interested to hear what used speakers rarely get listed for sale because they are so sought after and if they do appear they get snapped up very quickly?  Cheers
spoutmouzert
Here's a super rare speaker that would be simply killer to pick up used:

Waveform Mach Solo.

That was the slightly smaller, passive version of the famous Waveform Mach 17 speakers by John Otvos.   The Mach 17s were one of the most amazing sounding speakers I've ever heard and earned tons of raves.  But they were large, somewhat odd looking with the "egg" module on top, and required 3 amplifiers.

So Otvos came out with that Mach Solo speaker, which was actually more gracefully proportioned and came with John's absolutely top notch wood work, with exotic veneers.   I had one in my place for a while and it was almost museum quality and sounded awesome.

But you almost NEVER see them come up for sale, both because not a lot were sold and also, I'm sure, no one would want to part with theirs.

The only used pair I've ever seen came up in the last few years, where Otvos sold off his own pair. 




@reubent 

Good call on the RSA Sason. Very impressive monitor and very rarely seen for sale. 
audiolabrynth said:
  The liberty labs liberty freedom speaker's must be a April fools joke!,  read the review,  researched as a joke!

Do ya' think? 
Sonus Faber Extremas (monster two-way), Dali Epicon 8s (have never seen used), Cain&Cain Ben Single horn, Dunlavy SC-Vs.