If I have to buy water, I go to AD or Gabes. It depends on where I am at in town at the time. Gabes is a little cheaper, and that is where I have been going lately. I try to, when possible, to get RO/DI from a friend I have met here on MAAST and then make my own water. I haven't had to buy SW in a while, only RO/DI. You might try to find someone in your area that has an RO/DI system and see if you can get it from them. Kick them back a couple of $$ for time and filters, if they will accept it....most generally won't, buy a bag/box of salt, and then mix it yourself. Good luck.