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
To: jdpalmer1/ + anyone else interested. There is a pair of ProAc Response 2.5’s in Mahogany for sale (local pick up only) in Portland OR for $1845...if anyone else is looking...they have been there several months.  Good people at Echo Audio.
And my 2¥, the Aerial Acoustics 5b, LSA Model 1 Statements, ( yeah, I waited about 2 hours too long for the last pair Insaw a couple weeks ago incredibly priced).  All tough to track down...