With some quick back-of-the-napkin math, I get just under 4 years of daily showers to break even (with their $400 retail price, assuming a generous $0.02/gal ($15/CCF), which is the highest residential marginal seasonal rate where I am).
If I wanted to reduce my water usage, I'd just take shorter showers and alternate days when I've not yet become smelly. These cost $0 and yield immediate savings.
If I wanted to reduce my water usage, I'd just take shorter showers and alternate days when I've not yet become smelly. These cost $0 and yield immediate savings.