AAP Sales for September: Slight Gain, but Mass Markets Dive

Net sales of books in September rose 0.4% to $1.116 billion as reported by 80 publishers to the Association of American Publishers. The star category again was e-books, whose sales rose 100.9% to $80.3 million. While doubling, the rate of growth was lower than in most previous months.
The biggest category to decline--by far--was mass markets, whose sales fell 54.3% to $31 million.
Net sales for the year to date have fallen 3.6% to $8.171 billion.
Sales by category:

CATEGORY	SALES	% CHANGE
E-books	$80.3 million	100.9%
Professional	$66.2 million	12.9%
Higher education	$459.7 million	8.8%
Children's/YA hardcovers	$78.5 million	2.1%
Downloaded audiobooks	$7.9 million	0.4%
Adult paperbacks	$111.6 million	-0.1%
Audiobooks	$10.4 million	-1.7%
Religious books	$64 million	-6.3%
University press hardcovers	$4.4 million	-8.6%
University press paperbacks	$5.3 million	-11.3%
Children's/YA paperbacks	$44.7 million	-14.6%
Adult hardcovers	$148.3 million	-18.1%
Adult mass markets	$31 million	-54.3%