Just found this deal for those who may have missed the previous posted deal from Zaavi
Batman Arkham City Collectors Ed. Xbox 360 $43 incl delivery @ OzGameShop
this is for xbox 360 only and not the ps3 version
not sure how much stock they have so if you missed out this is a good deal to jump on for an extra couple of dollars
You'll get it quicker and earn reward points too