microLensSupport (http://store.redrockmicro.com/s.nl/it.A/id.875/.f?sc=2&category=4)

I'd like to see if there's anything else out there like this. $100 seems a bit steep.

Welcome to shoot35! (http://www.sgpro.co.uk/products/rodssupports/bladebracket/bladebracket.html)

It's 65 GBP, according to the Google converter it's also 100 USD... could be the price range for this piece of equipment.