$904,865,709
At least according to Sony CFO Oneda.
http://business.nikkeibp.co.jp/article/topics/20070524/125473/
“In regard (to the future of game business) texture is bad, it is. If 'the play station (PS) 10,000 Yen ($82) in price of 3' is reduced, the profit wobbles as much as 110,000,000,000 Yen ($904,865,709) under. Magnitude (influence) is large, is difficult to foresee”. Like this what you speak is the SONY Ooneda Noboru line CFO (the highest financial affairs patsy).
Got to love google translation. Highest financial affairs patsy indeed