The thing that's a little odd about this fare is that it is called a weekend "promotional" fare, has a code as well as a long set of rules and restrictions. In other words, by appearances, it looks like a legitimate fare. So if it is a "mistake" fare NZ needs to tell us what the mistake is. If it is simply the amount fare, what should the fare actually be for this very specific "promotional" fare? Or is it a promotional fare for a very limited targeted segment that somehow was made generally available?