I would rather invest the money in the in a RO/DI unit than buy from the store. As much water as I add it would be more convenient to have my own unit. Besides when you have your own unit you can be sure about the quality of the water that you are adding.
If you end up buying from ----, let us all know how it turns out. I'm really thinking about buying from there.....prices are great (but I’m skeptical as well)
