Asian Pantry Melbourne is running a promotion on Irvin's salted egg snack.
The 105g pack is $15, 230g pack (original flavour) is $29 (https://asianpantry.com.au/collections/specials/products/irv…)
I can't find any local grocery stores that sells Irvin's Hot Boom - except for ebay and other small online retailers. They have an official branch in Sydney but the shipping to Melbourne is quite expensive.
Give it a go, you don't need to bring it from Singapore or Malaysia anymore. Also 5% off if you use promocode GMCFREEGIFT for minimum $30 purchase.
Ouch!
Shipping costs $12.65 to ACT for a bag of 2.