The problem is that the toilet&#x27;s estimated cost is $0.05 per user. So for a 4 person family potentially living on only a couple dollars per day this would make up 10-20% of their living expenses. This isn&#x27;t like our budgets where we can afford 10-20% because we are WAY past trying to eat and live. This is 10-20% of all the money you have for food, clothing, and medicine.<p>Also, I&#x27;m assuming the toilet will go up in price as more people try to make more off the system.<p>All that said, I welcome the Nano Membrane toilet to the much needed market. I&#x27;m all for composting toilet technology as our current system of simply creating raw sewage then trying to treat it with massive amounts of chemicals (which are very bad for the environment) isn&#x27;t sustainable.<p>1) Natureshead, 2) Airhead, and 3) Separett toilet<p>These three all much better suited to low cost, rural uses. For more hi-tech versions we have Sun-Mar. However, all these still cost at least $1,000 USD.