What's an easy way to find out Krisflyer fuel surcharges?

Can anyone tell me what the surcharges are on Krisflyer business redemptions perth to Singapore and return?

I haven’t found a method to do this without calling Singapore Airlines if you don’t have the miles in your account. You could probably check the fare breakdown on ITA Matrix and try and work out what the taxes and charges would be, but easier just to call and ask.