Found these BPA free plates, bowls and drink bottles on clearance in Kmart Hornsby (possibly nationwide?). They're microwave and dishwasher safe. Couldn't find these on Kmart's website.
Same brand (Zak!), slightly different designs are $5 in Coles.
Finding Dory & Spiderman
Plates and bowls $2 each
Canteen and glitter tumblers $3 each
Glitter tumblers $3 each (all I could see of Frozen)
There was plenty of stock of all of the above.