PlayAsia is the only retailer to sell this game directly, outside of the game's official website (which still lists it for $49.99). This is lowest its been, so I thought I'd share.
http://www.play-asia.com/DJMAX_Technika_Tune/paOS-13-71-vy-49-en-70-5wdp.html
http://www.play-asia.com/DJMAX_Technika_Tune/paOS-13-71-vy-49-en-70-5wdp.html