MS Vista cost 10 BILLION to produce?

BusinessWeek estimates it took 10,000 employees about five years to ship Vista.

If we assume Microsoft's costs per employee are about $200,000 a year, the estimated payroll costs alone for Vista hover around $10 billion. That has to be close to the costs of some of the biggest engineering projects ever undertaken, such as the Manhattan Project that created the atomic bomb during World War II. And while Microsoft toiled on Vista, its stock price stayed flat.

FROM THE SEATTLE TIMES.