@penfount I'm more or less "done" buying new fountain pens for a while, but my grail was/is the striped Pilot Myu.
I spent a day in Tokyo last year (on a stopover) and scoured second hand pen stores but couldn't find one -- the process soured me quite a bit, as I'm used to fountain pens being a "nerd" hobby and not a "luxury" hobby. Several of the used pen stores in Japan really leaned into the luxury aspect, and the clerks eyed me [not very luxe looking] like I just walked into a Chanel wearing socks and sandals. Felt gross. I stopped my search for the grail pen since.
I did end up at Kakimori which I guess is kinda "medium end"? Much better vibes, bought some neat ballpoint pens.