Kingy said:

I’m outraged. I was just putting together an online order from bunnings, and when I clicked on the item, it was $120. So, I added it to my “trolley” and asked for a delivery address, which I put in. The delivery is $55, fair enough, but suddenly the item is $158 plus $55 delivery.
I go back to the bunnings webpage and the item is now $158 where it was $120 a few minutes ago.

Fk’em. I’ll try somewhere else.

If not urgent you can always leave it in your trolley for a day or two and see if they offer any incentive to buy from them.
I’ve gotten 10% discounts on occasion, not with Bunnings mind you, may be worth a try