Marketplace
This seems like a cheap deal for 24 (2x12 pk) whiteboard markers. Available in black, green, blue and red. Not sure how good they are. But hey, it's cheap.
Officeworks has the 12 pack for $25.62. You can try to price beat for a further 5%, not sure if they have to take into account delivery costs.
https://www.officeworks.com.au/shop/officeworks/p/crayola-ta…
Standard delivery is from $6.95 (vary with quantity and location). Pickup is from $3.47 from Target (varies). Free delivery over $45 if you're with Club Catch.
A pity they are chisel- not bullet-tipped.