Question: how much bread from 1 kg flour?
Answer: For me, 1kg of all purpose flour yields 1.6kg of bread (as two loaves). Each 13x4x4" (Pullman) loaf weighs about 800 grams after cooling and yields between 24-30 slices depending on thickness. The cost per loaf is under $1.00, and includes all ingredients, tax, and electric for mixing/baking/slicing.