My Aluminum Tank Industry 46 gallon tank can be purchased for $630 which includes the Fuel Shotz filler hose system. I installed it 2 years ago, fuel cost savings will have it paid for early next year. and I only tow about 6k miles per year. Don't know where the comment about never recouping the cost comes from. Since installing, I have only filled my tanks at Costco after a round trip. Fuel on the coast or in the mountains can be 50 cents to a dollar per gallon higher. No electric pump either. I feel it was a good add.