iSuppli's latest teardown has revealed that the BOM and manufacturing cost of the iPhone 3GS comes to $178.96. That's a little over $4 more than the previous iPhone at release last year and about $8 more than the Palm Pre.
The Rapid Repair crew ventured to France to obtain an early iPhone 3GS, dismantle it, and scope out the inner components. Their discovery? The same 600 MHz CPU powering the Palm Pre (that can actually run at 833 MHz).