I've got one, bought it from maplins, got the cleaning fluid from there too. It doesn't fit a full bank of carbs in so you have to strip them down to single units. Cost me £110 delivered with the fluid.
The reason I got one was I was working on a Harley, the float bowl accelerator pump section was blocked solid, soaked in carb cleaner for days but nothing would shift it. Used a friends maplin sonic cleaner and it cleared the blockage within 4 mins.
A local bike shop to me has a big cleaner which fits a full set in and reckons it cost him £900.