H
- Jujutsu Kaisen (volume 18) – 2,011,232 copies sold
- One Piece (volume 101) – 1,793,360 copies sold
- Jujutsu Kaisen (volume 19) – 1,608,811 copies sold
- One Piece (volume 102) – 1,605,641 copies sold
- Spy x Family (volume 9) – 1,232,036 copies sold
- Tokyo Revengers (volume 25) – 1,126,893 copies sold
- Tokyo Revengers (volume 26) – 997,857 copies sold
- Tokyo Revengers (volume 27) – 835,721 copies sold
- My Hero Academia (volume 33) – 790,901 copies sold
- Kaiju No. 8 (Volume 5) – 784,760 copies sold
As you said, I can't give you data on Boxing Set sales and digital sales because they don't exist, but I can give you objective data and you should draw your conclusions. Let's do a little exercise: imagine that you are a Japanese boy, 14-15 years old, you live in a small house, you have no income and you are interested in One Piece.
- From where would you get +800$ to buy the complete series?
- Would you prefer to buy the series volume by volume or would you prefer the cheaper Boxing sets?
- If you hardly have space, would you buy a series of +100 or would you prefer a digital version that barely takes up?
- If you have to choose between having 1 complete physical work or having 6-7, which would you prefer
Do not be influenced by your opinion and let's be impartial.
And your digital sales logic only applies to One Piece fans for what reason?
Maybe One Piece sucks in digital sales and all other newer mangas sells more than One Piece.
Maybe only old readers are supporting sales because they already have all volumes while new readers are not reading One Piece and are just buying digital from other manga since they are younger and more digital person than average order One Piece Reader.