Thanks for the heads up.
What the miner makes per day, in fiat equivalent, doesn't bother me.
As long as it mines Bitcoins, that's the only thing that counts for me.
The Antminer S3 does indeed use less then 400 Watts and runs at 441 Gh/s, that a 0.77Gh/s ratio.
Better then what I have now.
I looked up the other Antminer products and
it seems you can underclock them to use less Watts.
An underclocked Antminer S5 or Antminer S7 looks interesting.

I saw some recent USB miner, but the price is just too much; 60 for 25Gh/s (GekkoScience 2Pac).
Is there any other miners that can be underclocked ?