Yes, it certainly is a glitch with an inflated shipping rate and we apologize for this inconvenience. Occasionally our web site has difficulties recognizing certain international addresses and this error occurs.
It is something we are diligently working on correcting and hope to have fixed on our next mass MDD update.
For anyone experiencing this issue, buy with confidence as all addresses are verified on our back end and charged only the exact shipping cost to your location. To New Zealand, your shipping should be no more than $30 USD.
If you have any further questions, please do not hesitate to contact me via PM.