Unless you're looking for a TLK Beserker or Hound there's not much left on the Transformer shelves at the TRU stores over the weekend (please don't work out how many KMs I did!)

Frankston's store still had some POTP wave 1 stuff.
Knox's store had no Transformers left, store almost emptied
Chadstone had the Hounds and Beserkers and some Studio Starscreams
Waurn Ponds had a couple of the TLK toys (30% off action figures)
Werribee had a few dregs on the shelf, store almost emptied

Went to the Moorabin store last week, same sorts of things left there. From my visits to that store I never saw the exclusive Barricades or Thundercrackers there and definitely none at the shops above.

Looking at some of the other toylines, often the same sorts of things still on the shelf - heaps of Vulture toys from Spider-man Homecoming for instance, nobody buying the Marvel Legends Songbird (she's a great character but obscure to non-comic books fans). Quite a lot of TLJ Star Wars stuff in most stores too.