Martin Logan CLSII Z Limited Edition

I have a pair of Martin Logan CLS IIZ limited Edition loudspeakers. I was thinking about selling them & getting a better amp to drive my B&W 800's. Never have I seen a pair of these for sale, anyone ever see a pair sell? How much did they sell for? This is one of the last pair ever sold by martin logan. They sold for $6,000 new.
Thank you for your replies.
I think they were called the Anniversary Edition, and were the same animal and price ($4500) as the standard CLS IIz except possibly for some additional available finishes. You can find out for sure on the Martin Logan Owners' Club website: