We have one too, and use it quite a lot, but as has been said, they do not save you much money, if any. They're for convenience only. We just keep packs of ready mixed flours of different varieties in the cupboard. Then if we run out of bread or just fancy some fresh bread but aren't going down the shops, we can whack on the bread maker.
So yeah, the 'saving some wedge' bit of your equation is the bit that doesn't add up.
