Yes they have surely.

Feels like they regularly increase the fees 2 times a year and the postage is not realistic anymore.

And sellers have to regularly adjust their shipping rates accordingly.

90% of my goods now send through courier.

Auspost is not competitive anymore and they can raise the prices as much as they want but it also lose more parcel-sending customers.

Also the cubic rule in Auspost is out of date, a girth of 140 cm and max length of 105cm is simply insufficient they really should look into increasing these parameters by about 10%.