G'day vtcommie,
You can expect to pay dealer prices anywhere from $10,000 to $19,000 for a vt standard, all depends on what catagory and klms your after.
If you want the sports models eg: s-pack and ss you could go from $21,000 to $26,000 for the s-pack and from $26,000 to $35,000 for the ss. This included the series 2 vt with the GENIII.
Another factor is your location. Sydney and Melbourn do great deals on these cars and VX models also.. Some VY series I car have been going cheaply as well.
Give us your location, prefered model (eg: exec, acclaim, berlina, s-pack, SS etc) and how much you want to spend maybe we could narrow it down for you.
Also you could try www.tradingpost.com.au for a guide on prices.
Cheers
Phil