now I'm back on a better computer, just a tip..
apple run via their website a Rerfurb store. these machines are returns, ex display (ex mac store) reworks QC fail machines, etc,
the products have been repaired/reworked/ (or repacked) some have never been used, just moving stock, etc by apple, they come with the same basic 12 month apple warranty and coverage, same in store support, exactly the same as a new unit, and have the same ability to add applecare extra warranty to this..
its the same as a new one you might pay full price for...
they often arrive with more than what was paid for,, (Ive had two refurbish imacs turn up with more ram and bigger HDD's than the spec I purchased)..
you have to keep an eye on the store to see what comes and goes, note that some are the older models, **the imac has JUST in the last 4 weeks seen a product refresh/update so the new models on the refurb store might take some time to arrive/show up, and they will move quickly when they do.
other than that, JB hifi will price match and discount if you PUSH hard on the price, most other places wont, dick smith have 10% off macs sales every now and then, (but not on custom order devices (extra ram is a custom order)
and if you have kids in schools, you can buy via the educational apple online store and get a decent price as well.
they also have other i products cheaper. generally %15-20 off the RRP..
http://store.apple.com/au_epp_10011/browse/home/specialdeals/mac is the link
http://store.apple.com/au_epp_10011/browse/home/specialdealsi would never buy a new mac again, and havent for a number of years, ($10000 of refurb macs over me/family/friends with no issues) always had refurbs and always had very good experience.