Hey! You should look at the app KiwiSprout Rural Shipping as mentioned above. We implemented it into our store last month and it's so easy to install and only $5 per month. Its awesome! 

We've just set this up and its working a treat! Thanks team!!!

Hey there! It would be amazing if you can please share your spreadsheet with me? jo@glutenfreeshop.co.nz. We are getting smashed with RD costs! 

Hey David, it would be amazing if you can please share your spreadsheet with me? jo@glutenfreeshop.co.nz