Used Martin Logans


I see a ton of Martin Logan speakers for sale at about $1500.  What gives?  Please leave pertinent, helpful comments “They Suck” is only so you get to hear yourself.
tochsii
I bought a pair of Martin Logan SL3 back in 1995.  Paid $3800 (CDN).  Sold them last year for $1200.  I loved them for 25 years, and the fellow that bought them, after listening to them, thought they were worth what he paid.  Maybe that's why there are lots for sale in this price range?  
I’m not saying they’re not worth it.  I don’t know much about the brand.  It’s just interesting that there seems to be a glut on the market.  Is there a “trade in-Trade up special”?  Maybe they made a TON of a model or two & just by the numbers there’ll be a lot on the market.  Sounds like there’s not a glaring reason.  Thanks everyone.
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I have owned upper evolution series dual powered woofers 
you unplug panels and vacuum once a month rule of thumb
xover parts are average at best ,I modded them  and after sold them this was my 2nd or 1st was the request , a bit to polite on top sound labs is 👑 king of stats they have detail and punch 
but are Big .  Buy a spatial audio labs x3 or x5 are great stat like speakers being very good open baffle speakers .