I have a beautiful Gearnex Gear head for sale. Basically I bought this to get smooth with the wheels as an operator. The head is in excellent shape,never used outdoors and has been extremely well treated.
It has a Mitchell base presently on it, and comes with a 150mm bowl adaptor as well ($400.00). The whole head comes in it's custom pelican case, manual,and training video. This head was bought from Vistek in Toronto, I paid $7800 with taxes and they included shipping. If you want to check out some more specifications ,and authenticate price, goto;
http://www.vistek.ca/results/ProVideoTripods/vidtripod/Gearnex/Video-Tripods.aspx
Asking $6200.00 plus shipping. If you desire more photos, or info ,please feel free to ask.