A core feature of the Luggable PC is the ability to build a high-end portable machine around a high-end GPU without paying the price premium of a gamer laptop. Unfortunately, due to demand by cryptocurrency miners, prices for discrete GPUs has been distorted for the past several months.
With outrageously expensive discrete GPUs, the price advantage of building a Luggable PC has disappeared. The original plan for this project was to upgrade from this old AMD R9 380 to something modern, verify everything still works, before proceeding. All we have to do is wait out the cryptocurrency craze and we're still waiting.
The R9 380 is roughly comparable to a modern GTX 1060. Laptops with integrated 1060 mobile GPU now cost roughly similar to a Luggable PC with similar specs thanks to inflated GPU prices. If there's an urgent need for a machine with a decent GPU, it now makes more financial sense to buy a gamer laptop.
This craze, in time, will pass. It's a matter of patience waiting for the bubble to burst.
In the meantime our Luggable PC still has the advantage of a far larger screen.