Anyone know of obscure sellers for this? Either in kits, or even in assembled form?
http://www.alexandrugroza.ro/microelectronics … sbmc/index.html

Or do I need to suck it up and order the PCB and parts myself one by one?

EDIT: While searching, I found a project site offering a possible 386 alternative. Although there is no preview/timeline yet.
https://electronics.dose.se/