From The Digital Reader:
The latest monthly sales figures from the American Association of Publishers are going to add grist to the mill for those who say that the ebook market is leveling off.
The AAP reported that the book market as a whole was up nearly 6% in August 2013 ($633.5 million from $598.4 million), and it was also down 4.8% for the January to August period ($4.26 billion from $4.47 billion).
The combined digital sales (audiobook and ebook) for the first 8 months of 2013 totaled $882.8 million, down 3.5% from $915 million during that period last year.
. . . .
The August figures show that the total digital sales were down 1.7%.
. . . .
The YA ebook segment was down 7.6% ($13.3 million from $14.4 million), while religious ebooks were up 4.9% ($4.9 million from $4.7 million). Curiously enough, adult ebook sales broke with their previous trend of steady growth and took a dip in August; they were down 2.9% ($114.8 million from $118.2 million).
Link to the rest at The Digital Reader
PG would note that the American Association of Publishers figures are a snapshot of what large, medium-sized and some small publishers are reporting as their sales.
Indie author sales are not included and Amazon provides no sales information to the AAP.