Yeah well a quick check on the Auction Sheet as above is always a good start and talking to the guys at Japanese history check on the car if you are wanting something collectible. I guess just stumping up and having a look is the trick and looking for the rust in the normal places.

If that one is a genuine grade 4 it shows how much the money is moving here in Aus for them too.

Non complied I would still tend to think the money is on the high side...but if its a clean and decent example to be kept long term its a good buy.