Cheapest I've seen for Australian stock and cheaper than some of the overseas sites like chain reaction cycles and wiggle as well.
If you sign up to their mailing list prior to purchasing you will receive a $10 off voucher code also.
This bundle includes the heart rate monitor and cadence sensor.
Free Australian shipping for orders over $100
I haven't ordered from these guys before but they claim "Immediate Shipping" so I'm hoping it won't be long before I receive it.
the garmin edge 800 is a new model and can be bought for around the same price.
I wanted one of these but decided on a dedicated gps instead (the garmin etrex 20). Can't see the screen when i ride as its too small!