Thanks to Darius for reminding me about these once in a while sales from Ikan. Periodically Ikan will have a 48 hour blowout sale discounting very select items from 30-50% off. Sounds like a great deal, but here's the other catch. Those very minimal select items are also on sale in minimal limited quantities. Today the IKan Friction Follow Focus shows up on the sale page starting with only 15 available at a discounted price of 30% off. If you're looking for a simple, modular, fast to mount follow focus that doesn't require different sized lens gears for each lens you own, today could be your day.
I've been playing with the one I have for a while and although it can be mounted in many different ways, I find it works best when using the rod adapter mount, and put onto the new Gini Rig that I have. If you don't have a basic rail mount, you can find a cheap base set over at Express35.com.