how is the e36 cost more to maintain?
parts are also easy to get. At least 2-3 guys on here that can get/have them them plus all the online vendors...or the dealer if you have to go there.
If the engine is in good shape/running order I would be more concerned with maintenance being up to date that the mileage number. The engine will run a long time.
maintenance means much more than the number. Id take some higher mileage and complete maintenance over low mileage and no maintenance.
200k is fine provided the car was cared for.
things to watch for