In 2017 , the comic book market size for North America was just over $1 billion with digital sales being flat , book stores having a 1 percent decline .
Comic book stores having a 10 percent decline over 2016 .
In 2017 , the comic book market size for North America was just over $1 billion with digital sales being flat , book stores having a 1 percent decline , and comic book stores having a 10 percent decline over 2016 .