Hi Lorraine - I can only say, do NOT trust the "specify shipping costs" section where you can (supposedly) calculate courier costs. These are not accurate - my courier cost increased by over 100%. You cannot change shipping costs once specified - the only way is to ask the buyer to pay the difference, and this is very difficult if they have paid by Ping. So, I would say, best to manually estimate your own costs via NZ Post (or other ) website.