Hah, that is indeed a fine looking writing instrument. I have the fountain pen from the same range. It has a similar hinged pocket clip and the machining is beautiful.
I’ve found many interesting products via HN recommendations. Do you have any more interesting pens?
The next step could be Montblanc ballpoint pens, but that's a very different level where it comes to money; the writing experience is far beyond that of most ballpoint pens at a sub-100-USD range.
Then there's fountain pens, which is a whole new ballpark... If that interests yourself, I recommend these brands: Platinum, LAMY, Pelikan, Sailor, Montblanc, Pilot, and Nakaya, in no particular order.