Used value for Ioptron Cem25 2" legs tripod

I don't know if this is the appropriate forum, but I would appreciate some idea of what an excellent condition CEM25/CEM60 tripod (2" upper legs) would be worth on the used market. This was the previous version of the Lt Roc series tripod Ioptron offers now, but I believe the Lt Roc has the 1.75" upper legs instead of the 2" upper legs my tripod has. I used it originally for my CEM25 mount which I eventually sold and bought a new CEM60EC. I needed a heavier-duty tripod after I purchased a Celestron 11" EdgeHD.  I then upgraded to an Astro Physics 900GTO which came with a Losmandy HD tripod. I lucked out and found a top plate for a CEM60 mount that was matched to a G11 tripod.  As a result, I kept the CEM60EC as a backup.