Marketplace
Looks like old Bunnings at Mascot (not to be confused the newer store at Alexandria) has just finished their FY15 stocktake. Lots of random clearance specials dotted about the store, including this one in the gardening section.
There were pallets full of these DF Omer (brand) dual chamber tumbling compost bins marked down to just $50.00ea - originally $129.00ea.
Product information here: http://www.dfomer.com/Dual-Chamber-Composter
Looks like the product has been removed from Bunnings' website so you might find a similar detail at your local store. Good luck.
It's replacing our two year old Aldi compost bin (ref https://www.ozbargain.com.au/node/117533) which a tradie managed to destroy while working at our place. He gave us the $100 to buy a replacement, so I'm chuffed that I've landed a better-made composter AND scored $50 beer money. :-)
Aus wide? Please report in troops!