Logitech UE Boom (All Colours) $188 (Was $232) from Harvey Norman

According to PriceSpy this is the cheapest price.

Noel Leeming has it for $299
Dick Smith also $299
JB Hi-Fi has it for $219
PB Tech has it for $216.20

According to the description, this wireless speaker has a 15 hour battery life and can be controlled via Bluetooth or NFC connection.

Another hat tip to surfisup1000 from Geekzone