> I don't know how you can sustainably make a laptop and sell it for $100. I'm selling the first developer models for EUR 549/599 and I'm not making any profit on these, it's basically passing on the material cost. I guess it's a tradeoff between cutting enough corners to bring the price down and trying to achieve some base of quality and durability. These are different goals.
I don't completely understand your goal. If the case has been designed to be able to sensibly 3d print replacement parts, why are you spending so much making the thing high-quality and durable in the first place?
After almost a year the Pinebook I bought doesn't have any broken parts at all. Additionally, that FF update that brought multi-threaded page loading was essentially equivalent to upgrading the CPU. (The people I bought it for use it mainly to browse.)