Produces soda stream machines for bottling carbonated water.  They also make a range of syrups (cola, orange, lemonade etc..) but I rarely use these flavourings.  The main reason why I use this product is to make home made soft drinks with my own Fruit Cordial and Raspberry Vinegar Cordial mixtures.

While it does make fairly cost effective soft drinks it is not super cheap, especially when you take into account the initial capital outlay.  The basic unit costs around $120 AUD.  Though of course it is cheaper when you use your own home made cordial syrups.