I'm not sure what area you are in, but in the Southern California area the current public price per GGE is running in the $3.00+ range on average. The Phill unit from Fuelmaker is about $4,000.00 + installation costs which are in the $1,500.00 - $2,000.00 area. Based on the rate per KW and a discounted per therm rate from the gas company it works