Do you know the part number for the harness? I am sure that there is someone out there either overseas or within Oz that sells the harness for less than $200.
EDIT!
There you go guys.
http://www.ecstuning.com/BMW-E92-335...ght/ES2138675/
UNDER $100 SHIPPED TO ALL YOUR DOORS!! ^^
OR FOR $89.00+shipping here-
http://www.europeanautosource.com/pr...23-3-series-m3 (I'm not too sure whether this harness kit is OEM)