Well - you have a couple arguments there:
-Can you get a Jala/BFL anything at that price within the next couple days?
-Power consumption?
However, now that one can jump on a GB and get the UBEs at 0.45-0.55 BTC /each - so, you have to do the math on this deal including hub/fan or another UBE
Well, I do admit the wait time is quite horrendous for a new order of a Jally, so you do have me there.
Power consumption? Pretty good, 25-30 watts.
It's a good deal for the setup, it just doesn't seem to be worth is in terms of ROI is all.