Corn Stoves

I just read about a guy in Minneapolis who got tired of paying $400 per month to heat his house. He, therefore, bought a furnace from a manufacturer in Nebraska that burns corn. He pays an area farmer $1.60 per bushel to bring him a pickup truck load which he dumps into a plywood bin in his garage. Every morning the guy dumps a couple of pails into a hopper on top of his furnace and burns a little less than a bushel a day. There is almost no ash or soot and the cost is down below $60/month. You can buy either a stove to heat one room or a furnace that distributes heat to the entire house. There have been 30,000 sold this year.
I wonder how long it will be before we hear of price gouging by farmers in the mid-west?