Well I got my first gas bill after burning nights a weekends for my first full month and let me say I am underwhelmed to say the least. I'm using my stove to heat the first floor and using gas for the second floor and hot water. In Oct my gas bill was $53.69 and in Nov it is $86.06. Last Nov the average temps around here were 47.7 and I used 2.5 Therms per day. This year it was 44.5 and I used 2.3 therms per day. So it was roughly 7% cooler out and I used about 8.7% less natural gas. I figure I saved about $14.81 over what my gas bill would have been. the problem is that I burned about 1/3 or a cord doing it. So if a cord of hardwood goes for $175 I used $58.33 worth of wood to save $14.81 in gas! This does not include my time, stove costs, fire starter costs, gas for the saw, gas fo the truck, tools etc. etc. Assuming I paid my self minumum wage I figure I probably lost $100 last month. Great......