I'm lucky enough to be Korean.
Hardkernels are made in Korea, but they are expensive here too.
H4ULTRA,Crucial48GiB,
M.2 2×2 card (pm9a1 1TB + AQC113 (10G) SSD2.5 2TB x4, with m.2 to adapter), I used to use Synology.
I'm looking to switch to unraid this black Friday.
(Using the emmc module to set up a USB boot tool seems like a pretty good build!)