At that price per gallon you could afford to give away a 1000 gallons of it to every farmer willing to try it. You should be setting up dealers in every county to do this. Would get lots of farmer to try it and if it works, would get lots of sales for the unit to make it.

After some more thought, it would be more convincing if you dropped off a unit to let the farmer try it for a day or two. Since the water that you could give us to try might not be what is produced from your unit.