Philips Hue B22 Starter Kit on sale today only for £86.99 (AU $149). According to camelcamelcamel its a good price (the history is limited) http://uk.camelcamelcamel.com/Philips-Ambience-Wireless-Ligh…
These seem to be the older generation bulbs (2nd generation which have less colour range and brightness than the 3rd gen bulbs), but it includes the latest hue bridge.
The models are really hard to compare and contrast but the cheapest I could previously find was: http://www.smarthome.com.au/hue-starter-pack-v2-3-colour-glo… for (AU $279 shipped). AFAIK you wont find the b22 starter kit in Australian retailers only the Edison screw version.
Note about the hue lighting system: These are definitely not the cheapest option for smart lighting. However they offer a large amount of flexibility and perform better than a lot of cheaper bulbs. They also seem to have the largest developer community.
Good price, but gen 2