After the Ryobi Rotary Hammer deal posted earlier I thought I'd go looking to see if there was anything available in the Bosch Blue range. I wasn't holding out much hope, but turns out Bunnings has the GBH18v-21 available for $199 with a 5ah battery via online redemption.
Given the 5ah batteries are $135 each when bought as a pair ($269 for 2), this makes the effective price of the drill $65 which is good enough for me!