Saw this on facebook. Head to an Estee Lauder counter to get matched with your skin tone and take home a small plastic container of foundation for free.
I got one from Myer Sydney CBD a week ago - you have to ask for it. Unfortunately the plastic container leaked and half was gone by the time I got home, so do check that yours has been screwed on properly :/
When I last checked out this foundation years ago from this deal, they had very limited shades compared to the US, and I couldn't find a good match. The good news is they have now extended the range in Australia. The website colours are way off though - best to check out in-store.
Colour codes:
W - warm (yellow tones)
C - cool (pink tones)
N - neutral
Technically you can always get this kind of stuff free for asking without the need of it being advertised. All the brand counters have loads of samples. I once went in to Estee Lauder specifically to ask about one of their foundations and got my make up completely refreshed. They washed my face and applied foundation, blush and eyeliner. It was a nice touch that I wasn't expecting.