Well I have used my breadmaker for years and have a friend who has used hers every day for years too. The nice thing is waking up to the smell of fresh bread in the morning whether you make any savings or not. Yes you can only make one loaf at a time which could be limiting for some people but if you use the dough facility you can make several batches of dough and bake them in the oven.
The other nice thing is that you know what goes into your loaf - and I personally make sure that far less salt goes into my loaves than in the shop bought ones. You won't make any savings really (unless you know where to buy flour in bulk) - especially after the cost of the breadmaker itself, but you will be eating healthier bread