I made Open Cola years and years ago, and here's the thing that surprised me most: You won't drink it and say "Hey, this tastes just like Coke!" It tasted good, it had some of the same sorts of flavor things going on that Coke does (sweet/tangy, neroli finish), but you would never mistake it for another cola.
The basic set of oils costs around $75 (most of that the neroli, IIRC), the carbonation setup I was able to do for around $100 (most of that the pressure regulator).
The basic set of oils costs around $75 (most of that the neroli, IIRC), the carbonation setup I was able to do for around $100 (most of that the pressure regulator).