Don't know about Australia but you could buy a near mint OM-2n on ebay in the UK for about GBP 60.00-80.00 (AUD 100.00-130.00) or about GBP 150.00 (AUD 250.00) newly CLA'd from a dealer so I would be tempted to replace your old one if I was in this position. It depends how attached you are to your old camera.