I don't know where you get the price of $62, 464 from because looking at the build price on that car for NSW the figures are as follows. Bear in mind the AUD is weak against the Euro (0.63 Euro to 1 AUD at time of writing) and so anything out of the Euro zone is going to be relatively expensive in AUD terms.
Holden VXR Liftback (from Holden web site)
RRP (incl GST) $55,990
On Road Costs NSW $ 4,964
(NSW Regn, 3rd Party insurance
NSW State sales tax, dealer delivery fee)
Total On Road NSW $ 60,954
In the land of cheapest GM cars, USA, they are selling this 2018 car as a Buick Regal GS but with 19 inch wheels and tyres rather than the 20 inch we get here. The USD is much stronger against the Euro than the AUD.
But if we take the Net US RR price and compare it with the Aust price adjusted for AUD-USD exchange rate , GST, a higher wheel and tyre spec with 20 inch wheels on the Aust RHD car plus the driver confidence package included in the Aust model but an extra cost option on the US spec cars, this is what you get:
1. USA 2018 Buick Regal GS 19 inch wheels/tyres
NET RRP USD 39070 (excludes the 925 freight charge and excludes any taxes, fees, dealer fees and other on road costs)
Add optional driver confidence package USD $1690 (included in the price of the Aust model)
Total Net USD 40,760
2. Convert USD price to AUD at 0.78
USD40,760 = AUD 52,256
3. Add cost of 20 inch wheels /tyres as per Aust RHD model AUD 800
4. Add Aust GST at 10%
AUD $ 52256
AUD $ 800 - 20 inch wheels/tyres
Total Net AUD $ 53056
Add GST $5305 (10% GST)
Total AUD 58361 (incl GST) (Does Not include any On Road Costs)
But GM is not selling this car here at AUD 58361(incl GST) Net of on road costs but at AUD 55,990 (incl GST) Net of on road costs.
Furthermore, once this model has been on sale for 6 -8 months, if you could not negotiate a $2000 discount on the VXR , especially for in stock vehicles, I would be surprised. With this discount you would be at $58,954 Including On Road Drive Away.
If you don't want a VXR you can still get the same 3.6 V6 engine, auto trans and AWD drive train in the RS Liftback for
$42490 ON The Road(NSW price).
With respect to European Brand rip offs here on "Treasure Island", I saw a Mercedes C250 on a stand at a Mall the other week with all pricing broken down. I kid you not, the "dealer delivery fee" was $3850 for this 2.0 litre engined car which excluding the usual on road costs was around $62000(incl GST). These arrogant retailers are treating customers like stupid pigs to the slaughter and many of the idiot consumers here on Treasure Island are sucking it up.