I'm usually over the other side of the wall, in the MTB bit and bought this off ebay under the mistaken assumption that it would work on a shimano set-up with some minor tweaks, as I wanted that short cage road look. However, given that its going to be a right pain in the bum to get it working and that its been sitting on a shelf at work for the best part of 6 months I thought I shall try and move it on.
Say £28 inc p&p ono
