Saw this Barricade Safety Light 'clearance item' at Bunnings Eltham last night and they seem cheap. They are not shown as an item on the Bunnings website, but checking RSEA these things go for about $15 (https://www.rsea.com.au/products/535092) and at Masters they are $17.50 (http://www.masters.com.au/masters/navigation/product_details…). They had about 5 of them on the shelf at the Eltham store (Melbourne Eastern suburbs) so not sure if other Bunnings have them.
From the sticker on the product:
Bastion Building Materials Barricade Safety Lamp
* LED Flashing Lamp
* 175mm Amber Lens
* Steel Mounting Bracket
* 2 x 6V Lantern Batteries (not included)
* Switch between Constant/Flashing light modes
Nah mate, those things are free from the pub! Every time I go to the pub with my mates, one appears in my loungeroom the next morning!