Quote:
Originally Posted by dewilson58
Lets than $1/gallon to purchase. Less than one gallon per month. ~$10/year to purchase. 
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So I'm a cheap skate! My wife and I both have CPAP machines so it's more than a gallon per month, plus we use the distilled water for other purposes, such as crystal clear ice cubes, and to wash the car so not to get water spots. We also make our own alkaline water, which if bought in the store is about $4 a gallon.