The catch is it is only available through Hobby King, or AMR of which one has to pay the difference in the dollar..
Actually, for what companies are wanting for 55-60cc twins I would go the route I have already gone. And that would be a CRRC 55cc twin from http://www.prcmodel.com/ at $409 it can't be beat. The one I have in my little Pitts is smooth as silk and more than enough power for the 22lbs. I have also dealt with other CRRC's at the field for friends and they are the same, a great running motor. If you go the CRRC route, go ahead and do Bowman rings from the start, you won't regret either.