at the end of the day, if there's an idiot willing to pay that amount of money then there'll be an idiot asking that amount for them.
it works conversely too. The australian import driving public are the most retarded people when it comes to their grasp on realistic depreciation and market values. R34 GTR's are now in the 40-50,000 mark... we just bought an R34 Nur for 54,000 landed n complied a couple of weeks ago... and yet if you look on the used car market, there's people out there who think their R33 GTR's are still worth 40,000, and their bog stock R34 GTR's are worth 60,000.
And the reason these people keep asking their money is because when a car comes into the used car market at well below "dreamer" price, the first thought that embeds itself into people's heads is "there must be something wrong with it, or it wouldn't be so cheap".
at the end of the day a car is only worth what someone is willing to pay for it, and as long as there are people out there who still think "dreamer" prices are realistic, then the value of the cars will remain at "dreamer" prices.