Chinese ancient writing keycaps by muni

I see on Drop that the Tokyo 60 keyboard is rarely available. There is something in kit-packaging but not in black as I would love it. I love the HHKB layout to the point that I am configuring my ALT keyboard and my Hexgear Gemini as close as possible to it. But I struggle with keycaps due to the "backspace" and "|" swaps that the keycap sets on drop do not support. Why is Tokyo60 so rare on drop? What are the alternatives to it?

Corsair K65 Plus Wireless GMK Red Samurai Moondrop Tactile Tessence

All that sweat and money paid off. I will use it wisely. Tokyo 60 GMK Serenity Gateron Oil KIng

I saw the online configurator that lets you do this on the Shift V1, where it spits out a compiled firmware file to flash. The V2 doesn't seem to have this function in the Windows configurator, though. I can't imagine the answer here is "you're going to have to manually write the hex for every key in QMK, compile it, and flash that".

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If I want some hot-swap socket for replacement, where I can buy to ensure it fits this PCBA?