having read all 11 pages of this thread, i'm pretty sure none of you have answered the original question.
"Is HSV w427 worth $150k - $170k?"
Nowhere in the above question do Jeremy Clarkson, the r35 gtr, bmw m3.. etc etc get a mention.
at the end of the day, a car is only ever 'worth' what someone is willing to pay for it. If all 427 of these things are sold for whatever their asking price happens to be, they are technically 'worth' that much.
Not wanting to split hairs too much, all the debate about whether or not they are a good buy as compared to a GTR or anything else for this sort of coin does little to answer the original question.
My personal opinion? - $170k for a Holden is a dead-set insult, stonking power figures notwithstanding. There is more to cars than their 1/4mile and 0-100km/h times. After leaving my old VP commodore for my r33, it's safe to say i will NEVER buy another Aussie car ever again. I love Australia,
if i want to support the economy ill buy food that's Australian produced and owned.