Brought a Carbonfibre spoiler off "Oceanbreeze752" from Ebay - they are the Ocean Plymoth BMW dealership - link:
http://stores.shop.ebay.com.au/Ocean...__W0QQ_armrsZ1
Very happy with sale, picked the spoiler up for ~$460 AUD + Postage, much better than the $1100 I was quoted from my local dealership... Came with all of the resin, cleaner, etc. needed for self install, might go get busy now