QF is offering such a fare for AY/QF joint J from all Australian cities (costs more to fly QF Asia-Europe, about AUD 6900 vs. 6200). It is probably a response to Etihad offering low J/Y fares. BA also has some very cheap J fares. Any good TA can easily find lots of J fares for under AUD 7K to Europe (travel dates and conditions vary a lot by fare but most are for now until xmas).