Hi mate...hmmm, dont know about Sydney if in Melbourne a couple of places carry it (at ludicrious prices!); one such place is DNA in the GPO building next to Myer.
EFragrance.com.au used to carry Creed at reasonable prices; give them a call and ask for "Larry". If they no longer stock it, he would probably tell you where to look in Sydney.
ps - strawberrynet.com (like Renato mentioned) is probably your better bet pending any good deals on EBay.