So... Just noticed that the notebooks game are gaining new players recently.
Aside from Elia notebooks that was released late last year, this time around the Chinese PenBBS brand has released their own line of notebooks (and notepad/memo).
I know that Beini has been teasing this stuff and finally it was released on their Etsy shop about 2 or 3 days ago and they have 5 models in total:
474 - Notepad/ Memo Blank
476 - A5 Notebook Black Cover Grid
477 - A5 Notebook Purple Cover Blank
478 - A5 Notebook Purple Cover Lined
479 - A5 Notebook Black Cover Lined
All notebooks are sourced from Fabriano 85 gsm papers and are priced $8 for the notebooks and $5 for the pads/memos.
Personally, if I am going to get one, it will be the black cover with blank layout since he ruling is strange to me (lined is 9 mm gap and grid is 4mm) but I can not say for other people. Unfortunately it isn't an option so I guess I will be getting the blank purple cover.