Everyday Minerals - Samples for $0.01 + $4.37 USD postage
The Try Me samples come in jars allowing 3-5 uses, 1 gm size.
Their website has 12 different sample kits to choose from with 3 or 4 colours in each.
Discount is applied during checkout, postage to Australia is $4.37 USD so works out at under $5 AUD shipped. Payment by Credit Card or Paypal.