A good piece of kit, the DCK266P2T-XE Combo Kit includes:
* DCD796 2 speed Drill
* DCF887 3 speed Impact Driver
* 2 x DCB184-XE18V 5Ah XR Li-Ion Battery Pack
* DCB112-XE XR Multi Voltage Charger
* TSTAK Box
This has dropped in price from $529 to $444 according to price hipster. Still $529 at other stores. You may be able to get Sydney Tools to match, however it's on pre-order with them.
I was specifically looking for this model impact driver, with 205Nm of torque and 3 speed settings. Decided that I could do with the 2 batteries and drill as well.