Back in 2003 my uncle paid $53,000 on road for an xr6 turbo ute with premium brakes, hard cover, tint, towbar, premium sound and 18's. I got the same car and options just a different colour for $43,000 on road both from the same SA dealer.
Margin? there is a lot more than any dealer is willing to let on. Dont be scared of playing hard ball at the negotiating table, they want a sale though some dealers will do more for that sale.