looks expensive

Yeah, they do, but the Drillbit usbs (barntech GB) the usbs were $100 each and can be clocked as high as 2.5 or even 2.7 with proper cooling etc. As far as I know its 2.7gh\s theoretical maximum per chip?
You can get some chips as high as 3GH, but 2.5-2.7 is pretty typical.
What I meant was, having all that support hardware for just one bitfury chip looks expensive
