I find that interesting, as there's no QD crew in Melbourne yet. Unless of course you've forgotten to change your location.
I'd say realistically speaking anything between $1200-2200 per fornight would be accurate, it really depends on:
*reserve rosters
* overtime pay/band payments
* working on days off/IPD pay
* hours/trips worked
* penalties & other extras
* if you were sick/took leave
So for some crew they might not earn much, for others they earn quite a lot, but they WORK for it. If you're joining thinking you're getting 2000 a WEEK, you've got rocks in your head. $2500 a fortnight wasn't unheard of when there was lots of international flying in Perth, however there is NO international flying in Perth at the moment (with the odd Auckland pattern next months) so I wouldn't count on it.
If you can't live off a minimum of $1200-$1400 then I would say reconsider your need for this job. It's so not about the money, I mean sure you have some fantastic paydays (around the 1600-1800 mark) but it's not something you can count on regularly to have huge pays, it's more a bonus when it does happen.
Remember also that day trip DTA is taxed, overnight DTA is untaxed