They had a lot of Disney stuff - we got brand new Tsum Tsums at $5 each, they also had Disney Store fluffies too. There were thousands of Pop Vinyls from anywhere between $10 each and $250 for limited edition ones. I also saw heaps of other Disney figurines from various series. There was also a lot of old Disney collectibles including old copies of Disneyland magazine from the 1950s and lots of other stuff.
Of course - it isn't all Disney, they had plenty of other things from die-cast cars, old video games, footy cards, etc - basically anything you'd want to collect
The next one is one in September - check out their website:
https://www.visitpenrith.com.au/events/exhibitions/collectormania