Mine has over 200K kms on it, Basically stock except for replacement turbo approx. 80 thousand k's ago.
I've not ever questioned a price tag on maintaining it to date. Purchased with 70 thousand kms, it has been driven across Australia in heat, cold, slow, fast and towed my boat. I would have no issues selling it onto my mother given its condition. People often spin out when they find out how old it is!.
If the car seems legit and you're serious about it, splurge on an inspection at a mechanical workshop with some knowledge on them for piece of mind.