They do charge postage. Orders are dispatched through Australia Post.
TO FIND OUT THE POSTAGE COST, simply choose the item you wish to buy, then > click “buy” to place the product in the shopping cart > change “Quantity” to the number you wish to purchase > choose “the country you want the goods sent to” in the “Country” drop menu > click “Update Totals” to see the “Shipping Cost” displayed.
You can then click “Continue Shopping” or close the page. You can do this to find out shipping costs for any number of any of their products, without having to place an order.
The cost per item decreases as more items are chosen in their shopping cart because the Australia Post charges are calculated by weight, with cost increments decreasing with added weight.