I imported mine almost a year ago now, went through Geoff at Prestige, no problems except translating some of the more technical jargon on the auction sheets...
Prices vary wildly and you would be better served to look at one of the historical auction price websites like http://english.auto.vl.ru/auctions/ . Look at starting around 3,700,000 - 4,000,000 FOB for a good grade 4 car with low - reasonable KM's. The cars you see around for 2.7 - 3.2 million are probably grade R cars and you need to steer well clear.
Other advice is:
- Get a stock one as you will just have headaches trying to find stock parts to put back on it when it's over here for compliance. Even stock exhaust systems are tricky to come by.
- Check to see if it has Brembo brake pads before you buy it. You can see the brembo logo on the pads without removing the wheel/caliper. If the car you want has no brembo pads factor in another $2k for a new set of pads for compliance.
- If you get a car with good/new Japanese tyres on it, organise to get those tyres back from your compliance center after they put new cheapo brand tyres on it for compliance. I'm sure the Aust government knows best when it makes us use $700 nofrills tyres in place of brand new Bridgestone RE01R's.....
- Steer away from cars with the factory sat navigation system installed. This cannot be used in Australia, consumes half your dashboard with controls, and adds useless weight. It's pretty hard to find the parts to replace it with the standard climate control panel too.
- A lot of GTR V-Spec's are having their carbon fibre undertray go missing. Make sure the one you want has it installed before you bid.
As for colours, the top three in my opinion:
1. Midnight purple pearl III (very rare, only a few hundred ever made)
2. Black Pearl Metallic
3. Bayside Blue
White is very common it seems though. Sometimes to get an awesome car you might have to compromise on the colour.