I transferred points to SQ to book an award flight today. Luckily at the last minute before booking I double checked Qantas again and an award flight has been released today on the day I want to travel 
Flight was one way flight: SYD > BKK
With SQ it stops for 2 hours or so in Singapore so obviously should have a bit higher taxes. But the difference between charges and taxes is huge:
Qantas: AUD $126
Singapore Airlines: AUD $253
Are all Singapore airlines award booking taxes/charges this high? I don't usually book award flights with them.

Flight was one way flight: SYD > BKK
With SQ it stops for 2 hours or so in Singapore so obviously should have a bit higher taxes. But the difference between charges and taxes is huge:
Qantas: AUD $126
Singapore Airlines: AUD $253
Are all Singapore airlines award booking taxes/charges this high? I don't usually book award flights with them.