Yeeouch!!! That part cost about USD $750 new from Joe. They originally told me about $350 and then realized we had confusion on what part I needed. I was very very ucky to get the part off a parted out car here on NICO and it works great although my TCS lights still come on because I also have a faulty rear wheel ABS/TCS speed sensor. I replaced the part myself and it definitely was the most time consuming and difficult do-it-yourself thing I have ever done on the Q. I could do it today in about 1 hour vs. 10 hours before now that I know how everything works.
Seriously...try to find one used off a parted out car maybe in Japan or here in the US and have it shipped out to you in AUS$. Good luck in finding the part first and secondly at a reasonable price.
See this thread as I just replaced mine and be sure to use the correct tools as it makes the job much easier.
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