Cheers guys. I have a feeling a feather touch will always be out of my price range.

Doug, I'm sort of thinking an old 2.7" tak focuser might be the shot. Easy to robofocus with one of the new clutched couplers, I've got a couple of them here already, and all my tak adapters, including the reducer, would fit. Would just need an adapter to reduce the focuser flange down to size. I'll procrastinate for a few months