Whether you use a handy bread machine to do the hard work for you, or prefer old-fashioned, by hand breadmaking techniques, you will save OODLES of your hard earned cash by baking your own bread.
Buy flour in large quantities, and any other specialty ingredients - such as flax seeds, or other whole grains - in the bulk section at your local supermarket. It is usually far cheaper to do so.
Experiment with different bread recipes and find a handful that you and your family will love. When you get used to home baked bread, you'll never want to eat the commercial variety again!