I just priced up an SQ5 with similar specs to mine on the UK site and the car came to 51k GBP / 92k AUD drive away.
My car was close to 120k with all taxes etc, however I got it down to 99k. The car is less expensive in the UK, even with my large discount.
I stand by my comment that cars are more expensive in Australia. Still, significantly less so than Singapore