One of the features in shipping options just add an amount, say $15 and select (default) Add this amount to the shipping total.
All products can now have zero shipping cost applied to them and add a small shipping and handling fee if you want to make up for multiples of several items.
The first item will have $15 for shipping plus whatever handling fee you chose. The second and following items will only increase the shipping cost by whatever handling fee you attached to those items.
It is exactly what I wanted, don't know why it was so hard to find and why others didn't know about it.
Now this make this shopping cart really easy to use, just one very big problem left for Australians, and that is that the tax must show on the final amount, and also Tax Invoice should be printed on the documents with our Australian Business Number.
Some say it can't be done, while others are doing it.