Every trip into Wally Mart, CTC, Home Hardware these days they seem to be $7 a tin... when you can refill them for a BUCK ! IF you want to start Brian, I have a couple dozen empties here, I grab them from the PPark every Fall for the boys, left by the "green conscious" campers that leave them behind and the park absolutely hates them! I still use my 20 lb'r and a sunflower, but I now carry a top burner and 1lb'rs to take the frost off quick and cook lunch. The "boys" use at least 2 tanks a day x our 10 day trips... $20 vs $100+ !