I was just wondering what the Australian consumer law is in regards to incorrect advertising signage in store. The example occurred and I just wanted to know for next time: There was a 50% off sale on a particular brand of cosmetics within a store. A particular mascara also had a signage associated with it that said it was free if you spend over $25, which I did. When I asked about it at the register the manager said it was an offer from the previous week so I could not have it for free. So my question is if there is incorrect/outdated signage up does the store have to honour it (as this happens often)? What is the impact of there being another sale on at the same time applying to the same product?