Halo 3 Game will earn $700 million

According to L.A. Times' calculation of 10 million units sold at an average price of $70 each, Halo 3 will earn $700 million - of which Microsoft is expected to take 80 percent, or $560 million. Considering that Halo 3 cost $30 million to develop, another $20 million to market and Microsoft is apparently paying out a staggering $25 million in bonuses to Bungie employees, Microsoft still gets to keep nearly $500 million of spare change