Recently AirAsia has started adding an item called 'Convenience Fee' when one make booking with them. AirAsia introduced this fee stealthily - ie w/o any annoucement or notification.
Worse still, this fee is not shown anywhere in the fare calculation and ONLY appears on the FINAL page of your booking just before you confirmed your credit card or other payment details. I believe this is done intentionally so that for those who are not alert might missed this additional charge.
So folks, please be more careful when you book your tickets with Air Asia or AirAsia X as hidden charges might just crept up stealthily, eg they have also increased the luggage charge from RM5 to RM10 - also w/o any annoucement or notification.