From Anime News Netowrk:
The Japanese publisher Shueisha is producing 2.85 million copies of the 56th volume of Eiichiro Oda’s One Piece pirate manga — the largest print run that any Japanese manga has ever had in its first printing. The volume will ship on December 4. Since the manga began in Weekly Shonen Jump magazine in 1997, Shueisha has printed 176 million copies. The previous volume, volume 55, sold 1,487,845 copies in its first week and 1,720,884 copies in the first five weeks.
Now, that’s just for one volume. To put that into perspective for our American readers Marvel Comics, the number one publisher in the U.S., sold 2.66 million total units in all of October. Those numbers can be found here. The top selling comic in October was Blackest Night #4 which sold 137,000 copies.
The American comic industry has had it’s ups and down for the last couple of decades but it still has a long way to go. Can you imagine the day where Amazing Spider-Man, Detective Comics or Invincible could individually sell 2 million copies? Ya, neither can I.