If your looking for a 2nd hand unit then you might be waiting a little while... I've been trawling the net looking for them (a D90 that is) I only found maybe 4 across the whole country! 2 would be 2003/04 models and the others are 2011/12 models.

I started a thread similar to this the other day. Thanks to everyone who has posted here! Informative. I spoke to the wife yesterday about a D90 and to my surprise she loved the idea (not that she drives it much) so looks like we might be going to the dealer here in Mackay to have a look and going to the bank to see what they have too unless someone wants to sell me one for a reasonable price (between Townsville and Rocky?ish)