I'm basically thinking "the same product as Sodastream, but way cheaper". Like Specsavers did for glasses. Granted, there may be a little less demand for home

I'm basically thinking "the same product as Sodastream, but way cheaper". Like Specsavers did for glasses. Granted, there may be a little less demand for home fizzy water than there is for good eyesight ;) It's not like I have a plan to disrupt them, I just hate paying $30NZD for what I know is probably only 30c of gas, if that. I know there are shipping costs, retailer gets a cut etc... I'm just griping :D