Originally Posted by Al B
NZ have their own Circle Pac fare as well as the Star Circle Pac. You need to be very careful, as their own Circle Pac fare 1) books in D, not C and 2) the fare is valid for NZ and JAL flights only. It's quite possible the fare they are quoting you is for their own circle pac and not the Star one as 1 possible explanation for the discrepancy.
The NZ CPSTAR1 fare in C is NZ$7969 as of June 01. With the exchange rate, this is roughly equivalent to the CDN$5500 or the US$4785. It seems that the best ber is to book through NZ or UA to take advantage of the exchange.