Just a but of theory:
K's are noted when you receive a pink slip and sent to the rta each year. Take out the k counter cog and wind in a small amount if k's for that year when receiving a new pink slip. <--- that is untraceable. Yes it's f**king rediculous but there is nothing the rta can do about it and I know it would happen to a lot of people.
My brother bought an '02 wrx for a good price with 130k on the clock. He had a phone call from the police regarding the real k's that were on the car. It had a speculated over 250k's. the owner of the dealership was sent to gaol for defrauding a lot of his customers. God knows what else he had done.
If something is too good to be true, it probably is.
Buying any car is a gamble regardless of the year made and how good of condition it is in. So when you find something good, hold onto it because you never know what troubles you're paying for.
My girlfriend bought an '06 Holden with 120k on it, everything seemed fine and had all the paperwork. When I tried to do a plug change I noticed the head was threaded and it was burning 3L of oil every 1000k's. yes I'm furious, no she won't give me the address of the seller. I called the mechanic who had done the services and he played dumb and blamed the owner but he wouldn't give me an address or phone number. He went from knowing the previous owners quite well, to not knowing who they are and has never seen them again.