OK, so I know nothing about cosmetics but came to the conclusion that the girlfriend is paying more than $1000 a litre for mascara, seems to be right up there with genuine printer ink.
Whats the best approach? Is there a particular site that people go to in order this stuff?
Mascara would be good but also looking for cosmetics in the broader sense.
What brand does your girlfriend use?
If it's high-end, like you need to purchase it from Myer, David Jones or a salon, try
* Sasa (Currently has a low free-shipping offer: http://www.ozbargain.com.au/node/58232)
* StrawberryNet
* Sometimes, Chemist Warehouse may have seasonal bargains too.