Tegra k1 is $300 and $400 with 32GB and LTE. The switch definitely won't need top of the line assembly (and being hard to fix) as it is rather thick and have space for everything, no need for extreme thermal designs thanks to a rather large vent and the smaller screen also gives lower prices. I think the dock can be managed with at most $50.
Nvidia is somewhat underhanded as AMD provide both better visual and less lagging even at a lower fps with the same setting, but keep bragging about it. This is due to pascal using a more mobile focused api that sometimes lag more. But with NX, it is perfect to rival Xbox Scorpio and PS4 Pro, like how 1060 is potentially as good as rx 480.