[DanBC]

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.

[easp]

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.