Get 10% of your invoice back! 
The TRS enables you to claim a refund, subject to certain conditions, of the goods and services tax (GST) that you pay on goods you buy in Australia.To claim a refund you must:
Spend $300 (GST inclusive) or more in the one store and get a single tax invoice Buy goods no more than 30 days before departure Wear or carry the goods on board the aircraft or ship and present them along with your original tax invoice, passport and international boarding pass to a Customs Officer at a TRS facility
See the Customs Tourist Refund Scheme  website for full details. Only businesses such as ours that have an ABN AND are registered for GST are eligible.