Repco is taking 20% off clearance items which include this mega blow combo pack.
Was $0.20 cheaper during Boxing Day sales, https://www.ozbargain.com.au/node/747597
Checked online and and marked as in-stock for a few stores in WA (Cockburn, Cannington, Canning Vale, Kelmscott, Myaree, Victoria Park).
Please check the website for stock levels for the store nearest to you.
Bought it at Boxing Day sale and very happy with it. Far superior to the one that came with my pressure washer. I did have to buy an adapter to fit my machine for about $8