The BB is usually available one-arm at 10k EU with the Brinkmann arm. If it is available at 10k USD, then it is a better one than the ones I recommended in my earlier post, though I will prefer to wait for the two-arm one at this price (two-arm ones are currently costlier, 10 to 12k Euro without the arms). There is a guy who keeps listing one from 2004 that is not selling.
Also with BB the age is important, those made till early 2000s were not as good, then they tried to replace it with the Brinkmann Lagrange, then again restarted the Balance, circa 2009 or so I think, and those are the ones to go for. Also get the tubed power supply with it