Best RO?DI unit in Calgary for the price

[my2rotties]

I need a new RO?DI unit and am trying to do it for as cheaply as possible. Anyone know where the best deals are out there for the best unit by any chance? I found one at one store for $369 for a 75 a day unit, but think I can do better. Any insight? I have very high iron levels in my well water so it has to be really good. Can you PM places that have them if they are not sponsors, thanks in advance and hope you all had a good summer...