A lot of good advice throughout this thread, but there are a few I feel should be re-stated and added upon.
Something else to consider: there may be some well-made Japanese basses available to you in Sydney (though I don't know what those would be) that could be a cheaper option. Just a guess though, as I've never been bass shopping there.
My first bass, along with my most recent acquisition, are Crafted in Japan Jazzes. Specifically, they're members of the Aerodyne family (one Export model and now a Non-Export). Both are fantastic pieces of musical craftsmanship and worth the extra bucks paid for them. My point is, being in the Land of Oz and given your proximity to the Land of the Rising Sun, I'm guessing the shipping costs would be considerably less than getting them shipped to The States. It might be worth checking out Ishibashi's english website for examples of their new and used models. Y'know…see if something inspiring presents itself.
This can't be repeated enough. Also (and I may get crucified for this), if you are set on a Fender design, you may end up finding that one of the Squier CV or VM models sound and feel as good (if not better) than their Fender counterparts. Don't judge them by their lingering reputation. They've upped their game considerably over the past few years.
The Lady brings up a very valid point. Earlier this year, I had an absolutely killer Classic Vibe Jazz. (The only reason I don't have it anymore is because I traded it towards an equally killer Classic Series '70s Jazz which has ergonomic features that work even better for my hands) Don't pre-judge them by the Squier label. When they kicked off the CV line back in 2008, it appears they did a cross-the-board revamping of their quality control.
If you don't mind the weight, look for a Peavey T-40 on CL or ebay. Otherwise you can't go wrong with a Fender Blacktop Jazzzzzzz
Ahh…the Blacktop Jazz. Easily THE MOST ballsy and aggressive passive bass that I've had the pleasure of trying…and then owning!

And don't let the price tag fool ya. If you're looking for a bass that kicks like a mule, but is also capable of being mellow
(by rolling off the bridge pickup and adjusting the tone), while staying within a more-than-reasonable price point, it's the way to go.