To buy a copy in New Zealand - It's available in all good book stores! If you go to buy it and it isn't in stock they will gladly assist and order a copy.
If you're not in New Zealand - It is being distributed by IngramSpark (soon!!!!) and they have links to 1000's of book retailers. You can even buy it and have it delivered free to a huge range of countries - how good is that! Google will help you find this option.
If you want a signed copy directly from me - check out the opiton below!
This is also handled by IngramSpark (I hope they are as good as they look) and you can get an e-book from all the usual suspects (also soon!!!!!!).
Working on this option though it has been put on the back burner while I run around like a lunatic launching the book.