I have a fairly new (approx 18 months old) CEM40EC available for sale, this is the encoder based version meaning you do not have to guide when mobile and the built in iPolar scope that makes PA a breeze. The mount is approximately 18 months old and has performed flawlessly both when guided (0.5" RMS total is achievable) and unguided (~80% of 300s exposures at 2.4"/pixel are useable). Full details of this excellent mount can be found here:
https://www.ioptron.com/product-p/c404a.htm
It will come with the custom hard case, a 5A/12V mains adapter and a 5Kg counterweight. The saddle accepts either Losmandy or Vixen style bars and has pass through usb and power making cable management easy.
I will consider offers at about $3000 (new this is > $5000 so you would be getting a good deal) I am based in Sydney and the item is heavy so pickup is preferred or I could deliver within the metro area.
NB The mount does not come with a tripod.