With this module, you don’t have to associate SKU with a courtier.
You see it depends on what criteria you are going to use to calculate your shipping cost.
If price all your products have prices, if the weight you need to make sure that your products have the correct weight, if shipping type you need to create a shipping type attribute and here you need to associate it with SKU via csv update or update attributes options (Catalog/products/Actions)
Please refer to the attached screenshot.
Row 2nd - Australia/Queensland $125 for orders 0.01>500
Row 3rd - Australia/Tasmania $150 for orders 0.01>500
Row 4th - Australia/Victoria $100 for orders 0.01>500
Orders <500 are free of charge to all 3 states.
You can add more criteria Using Qty, weight, shipping type (shipping type is quite good cos i.e some of your items might be fragile and some not.
I hope it makes sense. Let me know if you need more help with it.