Comment by Nursie

Not really, no. Not at the same level.

If I order a $2 item from aliexpress with free shipping, like some baseball caps I just found, nobody is paying the $10 postage fee it would cost just on shipping to send one within Australia, in China or anywhere else. Let alone the $25 it would cost to send the item the other way, back to China.

The treaty distorts the cost of delivery massively in favour of countries with low internal post costs, and ends up creating absurd situations like this.