600 AUD.
I know roughly how much that is, especially with how stupid expensive stuff is in Aussieland. I wouldn't say it's a "bad" deal, but I will like to point out this system will be a low to mid ranged gaming system, depending on the title and your monitor.
If you're ok with that, and think that's worth 600AUD then get it. But know it still is a 4yo computer. Those parts probably won't last more then 2 years.