I am not sure if advising of an item for sale for a colleague is correct or not but here goes for now. In Western Australia, there is an Elemack Spider dolly with a Ronford Baker old-school fluid head attached to the 150mm bowl by an upstand on short columns, lengths of straight rail and a half-circle of curved track, studio wheels and pipe rail wheels, seating and low arm. Except for the low arm, all other parts are in industry transport boxes. It is offered by Steve Rice who now lives in Thailand. He wants $8,500 for it. He has it listed on the facebook. If you have a facebook account, you can find the listing here. https://www.facebook.com/groups/broadcastgearforsale/permalink/1662416403817500/?sale_post_id=1662416403817500 If you wish to contact him direct, his email is darlingfilms@hotmail.com