Earlier quoted context omitted.
I think the repairabilty makes it hard to even compare monetary value, since in theory, you'd be keeping the same body, while swapping out the mainboard. Is it cheaper to buy two other laptops compared to one laptop + mainboard? That's what, a 3-5 year timeline? Who knows what prices/capabilities/etc will be like then.
It could also be worth it to keep the same body and upgrade over the years, just to avoid the frustration of re-learning a new laptop keyboard layout.
Also being the most Linux friendly laptop also means they have very long update lifespans and being well built tend not to break…though there are plenty of repair parts and spares.