ref phorum junkies comment:

"Aus Post have technically cubed all parcels over 500g however until may most POs didn't bother and in the main they got delivered without any extra charge however they now cube all non flat rate parcels however irregular in shape they are."

I firstly ask- what do you mean by 'technically' please?

.....I have seen similar comments in these discussion forums lately suggesting that Oz Post 'cube' their satchels......and was puzzled so, I asked my local Australia Post folk late last week:

"Does Australia Post CUBE their satchels?"

Answer: "No!....How can we the satchels are freeform....the satchels are not a box, they are a satchel and therefore cannot be cubed"

Final question to p junkie: Which Aus Post reference do you have to confirm your (mis) information please?