Check These out....
topcom technology computer empire best deal 4 u the disc shop surpass computers
These companys are in brisbane but most can ship anywhere,
Also the latest trend in retail sales in australia is
"if you find a better price they will beat it by 10%"
This will give you a good guide to pricing locally,
I put the links to thier home pages so you can browse through
and have a look for complete systems...
Screw them down and play them against each other to your advantage, Dont forget that these are thier LISTED prices
and they would have to be making $$ on these systems so
Go for it and haggle them, Its your right, Dont be scared
to ask for something thrown in for free.(an lcd monitor) maybe adding some more dollars in..............
Good luck and let me know how you go with it........