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Re:Raspberry Pi reveals the final PCB design for the $25 PC by DanBC on Tuesday November 15, 2011 @05:24PM (#3240607)
That's often not true; PCBs can be a significant cost on the bill of materials for a gadget.

Amortising the tooling / artwork costs into big volumes helps, but even then the PCB is usually one of the more expensive items on the parts list.

Re:Raspberry Pi reveals the final PCB design for the $25 PC by easp on Tuesday November 15, 2011 @06:35PM (#3240900)
Yup, it was interesting reading some of the discussions about the design of the device. PCB cost was a major consideration. They aren't exposing some of the I/O pins on the SoC because it would require a more expensive PCB to do so.