That's
- 2 positive cards from the Greens, plus 2 positive pamphlets
- 1 letter from the Greens, masquerading as a letter from a local concerned citizen with a mix of positive and negative
- 2 positive cards from the LNP
- 4 negative cards from the LNP, 3 targeting Labor, 1 targeting Labor and the Greens, plus 1 negative pamphlet targeting the Greens
- 1 positive card from Labor, plus 1 positive pamphlet
- 2 identical negative cards from LNP-aligned campaign group Advance Australia, targeting the Greens
I only got liberal and labor spam. But it was a similar amount to your picture.
The liberal candidate kindly sent me two fake postal vote application forms complete with replied paid envelopes.
I stuffed as much of the election junk mail as I could in to the reply paid envelopes and mailed them back.
...from this, it sounds like something the AEC would be interested in.
They're aware, and it's apparently completely legal.
Just, it's enough that they have a warning (of sorts) about it on their website