Have you checked the rules and regulations of the Kris Flyer website?
No, but I book a lot of Kris Flyer redemption tickets. I haven't sat in a seat I paid for in probably 5 years. Me, or the kids. I totally understand that there are taxes, etc... on a ticket. I just don't remember it being so much, and what's worse -- when you ask what it's for, 5 different people give you 5 completely different answers. There is obviously some new policy in place, but no one over there seems to know what exactly it is, or even vaguely.
Customer service on SQ, Cathay, and a few others used to be extraordinary. And on board its still much better than most. But dealing with them on the phonce is usually the worst hour you'll have all week.
And because I still have a bit of rant left in me: Even taking this into consideration -- it is by far superior to the travesty that has taken hold of the airline industry in the US. US domestic carriers are all, except for a very few, on the brink of bankruptcy (or already there). The level of 'service' is shameful, appaulling and embarrassing. If you work for American or United, I apologise -- I actually have friends that are flight attendents and do a fine job. But the vast majority are handcuffed with ridiculous union policies that prevent them from doing their actual jobs.