One more thing about the costs. For the Librem 5 USA, Purism has to do custom manufacturing of the M.2 card for the PLS8 modem, the main PCB and the USB PCB, which together contain over 1200 components. The main PCB is 10 layers thick and it contains a lot of small parts. It is not cheap to do that manufacturing in the US, and there aren’t a lot of companies in the US that do complicated board fabrication.
In comparison, the typical smartphone has about 400 components and a 4 to 6 layer board. I recently tore apart a Huawei G Play mini (CHC-U23), that was released in August 2015. Look at the two PCBs and two M.2 cards in the Librem 5:
Now compare them to the 1 PCB in the CHC-U23:
