I paid some crazy amount for it on mechmarket back in the 2017/2018. One thing that was bothering me was absence of 1.5u R2 Backspace key for Tsangan/HHKB layouts. I had to used Pipe key, which was in alphas color, not in mods color and it really threw off the symmetry vibe of Tsangan layout. Then one day I saw one post which had keyset similar to Night King, with dark lettering on alphas and with R2 1.5u Backspace in mods color! I msged OP and he gladly swapped me his unused Backspace for some Night King novelties I didn't use.