This from a recent holiday airfare survey - http://bit.ly/sitiAC - where lowest fares were compared on several international routes, this being Singapore to Perth return, departing December 5th, 2011:
Malaysia Airlines SGD $630.40
Qantas SGD $748.10
Tiger Airways SGD $766.62
British Airways SGD $802.20
Singapore Airlines SGD $854.20
AirAsia SGD $932.00
If you check, most of the airlines are full-service - and among the most awarded airlines in the world. They don't demand extra fees in addition to the booking for seat allocation, stowed luggage, food and drink, et al. The MOST expensive holiday fare on the sample routes by a considerable margin was the 'cut-price' - AirAsia - boasting fares that include none of the comforts/necessities of the full-service outfits. So, why are they so much more darned expensive?
Is the artificial Christmas price hike being implemented to increase the airline's maintenance standards? I suggest you read the AirAsia safety articles http://bit.ly/G42HA and http://bit.ly/GGegl before you book. I know I won't be flying with them this Christmas or ever.