Chemist warehouse has 1/2 price RRP sale on the above mentioned make-up brands, plus another 10% off as mentioned in this deal, making it effectively 55% off.
Worth noting is Flower Beauty which is exclusive to Chemist warehouse - I bought their eyeshadow palette a couple of weeks ago and have been impressed with the quality - creamy and pigmented.
Nude by nature gift sets are almost always excluded from 1/2 price sales but there are a few now that are over 1/2 price. See also Nude by Nature Daylight Medium Xmas 2019 and Lip Kit which are great stocking fillers.
Offers are in-store as well but if buying online, free shipping min order is $50. Remember to go through your cashback provider.