Oldmodels Decals - maker of inkjet decals of New Zealand subjects
Postage and Packaging is automatically calculated by the PayPal shopping cart.  This way you can track the amount as you add or subtract items from the cart.

The rates applied are:

value of purchases    P&P
$ NZD –    0.01 -  9.99    $4.50
$ NZD –    9.99 - 49.99    $6
$ NZD –   50.00 - 99.99    $8
$ NZD – 100.00 - 199.99   $10
$ NZD – 200 and over      $20

The rates are subject to change as I have no control over NZ Post!