We bought a 50000 BTU stove in December to offset ridiculous propane prices ($2.50/gal) in our propane-heated neighborhood. We have a 2500sq ft house with stove in family room and have used it exclusively to heat the house. Since December, we have averaged 1.1 bags/day. First full month of use was $147 in pellets. I'm looking forward to seeing how the numbers add up at the end of the heating season.