200,000km is a 60 mile commute each day each way, easy if you live in Europe.
IMHO (having done 160,000 km in one year on motorways) a motorway km has to wear less than a town km, 50% less at least as the vehicle is warmed up and component wear is minimised.
I say go for it if really, really cheap but you may want to renew some bushes, the shock absorbers etc. and check for accident damage and tyre condition.
I would take it over a city car with 90,000km any time.