Vita version normally sells for around $40 to $50 (digital and hardcopy)
http://www.play-asia.com/deception-iv-the-nightmare-princess…
PS3 is only available in digital and the AU RRP is $75.95. Eekkk
PS4 is around $45-$70 (digital and hardcopy)
https://www.jbhifi.com.au/games-consoles/platforms/ps4/decep…
http://www.ozgameshop.com/ps4-games/deception-iv-the-nightma…
Keep in mind that this game is rated R and has DLCs so might be worth purchasing an Australian copy.
Darn, the one time I'm disappointed I use a US PSN account. Been looking for cheap Deception IV for Vita.