With the discussion of bulk flour sources, I picked up some AP flour and Bread flour in 25 pound bags at a local Sam's Club.  The brand is Bakers and Chefs and it is milled by ConAgra.  I contacted ConAgra to find out the percentage of protein of each.  The AP flour has a protein percentage of 11% and the Bread flour is 12%.  The prices were $6.83 for 25 pounds of AP flour and $6.87 for 25 pounds of Bread flour.  I've been baking with them for about 6 weeks now and have been pleased with the results particularly at those prices.  Unfortunately for some, they are only available in bleached form. 

I usually buy unbleached bread flour at my local Bulk Barn (I'm in Ontario) but I've just noticed I can get the "Robin Hood Best for Bread Homestyle White Flour" at my local walmart for quite a bit less $$ (5kg for $9.50)

I'm reading here that protein percentage in bread flour should be 14% and up..yet on the Robin Hood site the label shows the protien at 4g's ..how would I calc the % ?