Board Thread:News and Announcements/@comment-5774380-20150416171240

Volume 16 of Attack on Titan, released last April 9th, has already sold more than 1 million copies in its first week. The regular edition has registered 868,694 copies sold, while the limited (and much more expensive) edition which includes the DVD of No Regrets: Part Two has sold 187,940 units.

However, despite the huge sales, these numbers are inferior to the sales of Volume 15 released on December 9th, which sold 1,010,545 copies in its first week, plus the 187,917 copies of the limited edition with the DVD of No Regrets: Part One. This indicates a reduction of more than 140,000 units.

What do you think is the cause of this dropping?

Source | Crunchyroll

UPDATE: As Sim0n2170 has correctly observed, the suppossed sales of the first week of Volume 16 were actually recorded during just 4 days, from April 9-12; while those of Volume 15 correspond to the sales of 6 days, from December 9-14. This suggests there was no dropping really, and might even have been an increase.  