That's what almost everyone forgets. These guys gotta get paid, have their benefits paid, they've got a team of lawyers on retainer and the electric bill. Shit man, they developed a complete physics and graphics engine and suite FROM THE GROUND UP. Not some turn key gig like Havok and Unreal. Shot in the dark guessory here. let's say each Bungie team member makes $26/hr, $54,080 gross salary a year. There's 500 of them. $27, 040,000. I would bet this is on the low end, too.