Import duties vary from products to products depending on what products you're importing. For example, clothing and some textiles carry an import tax levy of 17.5%. You will only get taxed on this consignment if your supplier has declared that the value of the consignment is more than $1000AUD. Be carefull if you're buying at CIF (Cost, Insurance & Freight) value. If you're buying at CIF value you will not be paying an extra 10% as this is for GST if you're importing using your own freight agent here in Australia.
If you have a consignment that is way above $1000AUD, try getting 3 or 4 address, break the consignment into 3 or 4, or better still ask your supplier to under declare the value of the goods on the consignment note. This might help exhaust but be weary when you do your books at the end of the year as the ATO can randomly check your records with that of Customs. But the chances of you getting bust is very very small. On my 2 piece of coin, if I could make a suggestion, customs can give you a month to pay for any excess. Sell your products, pay your dues and alter arrangements for any similar consignments in the coming future.
Cheers gus and happy selling,