I've trawled through a bunch of online and traditional Aussie retail outlets, and here's what I've discovered:
Aussie Gamer $58 CD Wow $56 Chaos $63 Dick Smith $70 DVD Crave $61 DVD Orchard $65 EB Games $68 GAME $59 (web price only, $69 in store) The Gamesmen $60 Gamehead $65 Game Planet $70 Games Warehouse $70 Game Zoo $62 Harvey Norman $49 JB Hi-Fi $59 (or $69 with strategy guide) K-Mart $54 Quick Play $59 Target $54 WOW Sight & Sound $58
So, Harvey Norman is the clear winner, although that price is listed in their catalogue that ends December 13. It may remain at the price longer, but who knows!
If you've spotted a better deal, let us know in the comments.