So pretty sure this applies to online purchases only. Worked a treat for me yesterday as I ordered for collection in Brisbane and upon arrival was waiting for me.
Seems they have several options. Buy 2 get 15% off, buy 3 get 20% off & buy 4 get 25% off. Is available on certain items/lines. I was able to get 4 x 1 lt bottles of liquor for $117 - under $30 each, good price imo.
Available for online purchases only in Brisbane, Canberra and Darwin Australia at www.lottedutyfree.com.au. Excludes Melbourne City Store.