Go onto ebay and look up portable ro di units. They have some you can hook up to your sink and make the water. pretty reasonable. 30 cent per gallon is high. check around with some of the sponsors. I know some only charge 25 cnets per gallon and $1 per gallon for salt. Juest a though. Good Luck.
Just noticed you are not a ARC memeber .need to join...It has its advantages...like prcing on water.