ThHis is something of a rarity. I am thinking about selling my model F85 solar trackers. I want to get the newer F120's so I can have one less pole out there. Actually, I went to trackers from roof mounts, my other 2 systems. The tracker system performed so much better, I bought 4 of the F120's to get the panels off the roof. But, I like the F120's so much, I may replace the F85 with them also. I never ever see any used equipoment out there except small items like DC disconnects or something. Anybody think I will be able to sell them. Also never ever see any used solar panles either.