For a one-way flight from Canberra to Sydney in Economy:
GST - $9.91
Passenger Service Charge - Dom - $22.47
Passenger Service Charge - Dom - $7.64
Safety and Security Charge - $5.53
So a total of $45.55, for a flight which regularly retails for around $150 and is currently on sale for $109.
Thanks - useful to know. Where do you find this info, by the way? It doesn't seem to be stated on QF e-tickets, unless I'm being blind. Anyway, I'm guessing that all of those charges are fixed except for GST, is that right? If so, the benefit is not as good as I thought, but still not worthless.
For example, the most recent QF flight I booked was MEL-BNE return, which cost $465.98, and included GST of $42.36 and a $5.45 credit card charge. If the other charges were as above, that would be another $71.28 in charges for the round trip, but that would still leave a total of $347 excluding charges, so still a potential saving of $34 per person on a flight like that, or $136 for my family of 4. The saving would be greater if we went to WA, for example, or if the fares were just really expensive. As I said previously, this is not Earth shattering, but probably enough to more or less cancel out the annual fee.