I believe that you'll find that 2*60 is 120, not 128. Subtract from that the drive-manufacturer capacity tax (1000000000 bytes per GB versus 1073741824), and you'll find that it's well less than that.

But, to be more than unhelpful, Paul Grzelak has that much. He's been waiting for the 80GB drives to arrive, actually. I believe he may be the only one, though.