Picked up a Jabra BT2035 Bluetooth Headset for $9.99 at Aldi Ringwood in their electrical glass display case after the registers. I know this item was a catalogue item back in May so it's possible other stores are now attempting to clear out the stock. There would have been around 20 of them left. Cheapest I found on shopbot was $20 + shipping.
Southland (VIC) store also had them, as of late Sat afternoon. Also $10.