Coming to the end of my 5th heating season having a pellet stove in my home. I started this season having 5 1/2 tons of pellets stacked neatly in my garage. My first 4 seasons with the pellet stove I burned 24/7, and generally burned 4-4 1/2 tons annually. This year I started to use HHO in January when I was able to purchase HHO@$2.25 per gal. I just filled my tank @$1.76 per gal. and currently my 330 gal tank is full, and I have approximately 3 1/2 tons of pellets left. I would purchase another 2 tons of pellets if prices were to drop to about $200 per ton delivered(very doubtful). I'm also considering installing another 330 gal tank in my garage this summer so that I can take more advantage of the price fluctuations. I never dreamt we would ever see HHO and pellet prices soar to $4.50 per gal and $300 per ton respectively, but that definitely occurred in my locale during 2008-2009. I used to brag, and extolled to my friends and neighbors the cost advantages, albeit the "little work" envolved, of having a pellet stove. I still love having the stove, but I've learned this season that the greatest advantage of owing one is having a contingency plan to hopefully protect oneself from a spike in prices. I also share with many of you it's more enviromentally sound, it's better to spend our $$$$'s locally, and it's better not to send our $$$$'s to unfriendlies.........we all have our reasons and I respect all of them.