Not sure if cheaper but you know what's in it. Especially good for lots of grainy type breads and inventiveness.
The only thing is - as no preservative, breadmaker bread does tend to go stale quickly so you may need to make more small loaves very often, though I suppose you could freeze too?
You'll need yeast, strong bread flour (supermarket will have a selection), powdered milk and a breadmaker recipe book!
Nothing I like more than waking up to smell of fresh bread - though we dont do it all the time or every week.