The last time I was in Japan — Tokyo, 2016–2017 (Christmas/New Year) — I tried a Happy Hacking keyboard at one of the big electronics stores. I was so tempted to get it then but couldn't justify the price.
4 years later, I have one, second hand and in perfect condition. HHKB 2, not the latest and the Hasu programmable controllers seem impossible to get right now, but it's lovely.