EDIT: Oh I give up with the table- 15 mins of fiddling in the dark and still no table! Anyone know of an easy way to go from Excel to here and still have a table? I've got to get on with "real" work now but I'm all ears on learning an easy way to display a table 
Thanks!
Thanks!Take a screenshot and post an image
Your math is probably right, profitability is marginal at the current rates. And the blade is not priced competitively, the "cupcakes" at $170 are <$0.5 per KH/s, the blade is more than that, unless it overclocks like crazy.