According to iSuppli, the device costs significantly less to build than when it was first released in 2006, and is nearing break-even
iSuppli: Teardown of Sony's PlayStation 3
ISuppli estimates the Cell chip costs Sony:
$89 - 2006
$64 - 2007
$46 - 2008
ISuppli estimates the RSX chip costs Sony:
$126 -2005
$83 - 2007
$58 - 2008
The PS3 now costs $448.73 to build while selling for $399. So Sony make a loss of only $48.73.