that price is over the top, it looks exactly the same as the one I got off our local Snap-on man and very similar to the Facom one as well.
Mine has been used quite a few times on mine and friends Ducatis including race ones with out any problems, just don't do it with the button that the gauge says it should be. I use the No.4 button in mine as it corresponded to the belt tension done a couple of hours before with the proper Ducati service tool.
Last used mine on Saturday when fitting belts to my 748
http://www.ducatisportingclub.com/xm...d=1134#pid8168