$16500 is pushing it if you ask me, especially for a Zetec, in auto... You could most likely get a LX though with that money.... i know that the Ford Dealers up here have LX with leather and a/c for $16000 i think
BUT, since you live in Melb, you should check this out
http://carpoint.ninemsn.com.au/Deskt...ias=carpointau , which has an AUTO ZETEC with most options on it... im sure it was a dealer demo or something similar. It has 15000km on it... $18500.. so you can prob bargin down to $18000