Catherine PS3 Playasia US $19.90 (AUD~19.65) + Shipping*

This game is really good in my opinion and the cheapest I can find online, I just bought 2 for collection purposes, pretty good for under $40, though I should have got the Love is Over Edition from amazon when it was $65 though.

Shipping - If you purchase one item then it would be about $25.50 SHIPPED ($19.90+5.90 USD), if you take advantage of playasia's combined shipping then the shipping would be free in bubble wrap or for an extra 50c get them shipped in a box.

There are a few other good games for reasonable prices (not that great though - about the same pretty much anywhere else but good if you want to combine shipping but beats the usual places like zavvi ozgameshop etc though):

Binary Domain PS3 ~AUD 13.73 (though you could get it from big w for $10 if you can find it)
http://www.play-asia.com/Binary_Domain/paOS-13-71-bp-49-en-7…

Ninja Gaiden 3 Xbox 360 ~AUD 17.68
http://www.play-asia.com/Ninja_Gaiden_3/paOS-13-71-dh-49-en-…

Soul Calibur V ~AUD 26.57
PS3 http://www.play-asia.com/SoulCalibur_V/paOS-13-71-bp-49-en-7…
360 http://www.play-asia.com/SoulCalibur_V/paOS-13-71-dh-49-en-7…

Here is a copy paste of the description from playasia

As Vincent, a man recently succumbed to the irresistible beauty of the game's titular diversion, players find themselves swept into a treacherous love triangle. Catherine's core themes ‐ those of free will, of the delicate nature of relationships and the choices we make within them, marry perfectly with the intense, terror‐filled gameplay that serves to accurately reflect Vincent's growing sense of anxiety. It is an experience wholly unlike any to come before it, and is certain to leave gamers talking and thinking about Vincent's tribulations long after the credits have rolled.

• Vincent's waking fears, doubts, pressures, and growing guilt about commitment and fidelity now gleefully follow him into his dreams, manifesting as horribly disfigured monsters and a ticking clock
• The player must navigate Vincent through heavy moral decisions. As in real life, hardly anything is black and white. What is the value of honesty? What is the right thing to do? Either way, someone's going to get hurt. Worse yet, someone could die
• Famed character artist Shigenori Soejima and master composer Shoji Meguro create sights and sounds unlike anything else. As unforgettable and original as the game's narrative, Catherine's visual direction and musical score define and perfectly complement Vincent's terrifying ascent into the dizzying perils of love
• Local competitive and cooperative multiplayer modes, in addition to leaderboards, ensure that the many thrills and horrors of racing through twisted stages can be enjoyed by more than one player and add hours of extra gameplay to the overall experience

If you want to use my affiliate link then it is here:

http://www.play-asia.com/SOap-23-28-change_language-83-34cm-…

Mod: Moved affiliate link to bottom