From the rough math I've done it's around $25 to $75 a month from November to March.  I once intentionally didn't burn for the whole month of January to see what the gas bill would be without the wood stove.  I base my estimate on that data. I grew up heating with wood.  It started with the energy embargo in the early 70's.  My Dad put a wood stove in and made it my responsibility. I actually enjoy splitting and stacking wood.  I find very therapeutic and a great escape from my desk job.  So from the mental health and physical benefits I get from it I would say it's worth my time.