RO water, where do you get yours?

[mark]

in another thread calculated my total ro/di water costs for evaporating 2g/day and 60g/month in water changes, used a 4:1 waste ratio and included the ro/di unit price taking in account filters/di/membrane changes and it worked out to 2 cent per gallon. Add in not having to carry around 5g jugs of water, just doesn't make sense not to have your own home system.