BTW, degummed castor always worked perfectly back when we were mixing our own stuff. We got the impression from the stuff we tried over the years that what mattered was the degumming. It's a natural product so unless Klotz is adding some magic ingredient, they probably won't have any way to turn it into something other than what it is. And any other that you find will have just as much probability of being perfectly useful.

But advertising sells. So the Klotz name could be worth the price if you plan to repackage and resell.