If you want to calculate the true cost of low-carbing, you have to factor in all of the side savings like medical/pharmacy bills, clothing, etc. Personally, I find that the most expensive food is the processed junk. I sometimes buy high-carb foods for my son and it kills me all the time to think I have to pay over $3 for a bag or chips or $1.39 for a small cup of soda at McDonald's which is, come to think of it, no more than a few cents worth of liquid sugar!