My personal opinion is a pristine version 6 with under 100k should go for around 15-17k.
Once they hit 25 years though i dare say these things will become collectables. There were only 799 version 5/6s sent to this country. Alot have been crashed, raced, modded beyond recognition by P platers etc etc.
They also hold a lot of heritage and when the playstation generation become older they are going to want these cars.

A good stock version will definitely be worth $$$.
This is just my opinion so dont crucify me

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STi Ver 6 | 2.1L Stroker | 418whp | 11.5 @ 199kph |

Not fast enough dammit!