Graphic Novels Hit $375 MillionAn ICv2 Release. The U.S. retail graphic novel market reached $375 million in sales in 2007, according to an analysis conducted by ICv2 and presented at its annual ICv2 Graphic Novel Conference at New York Comic Con on Thursday. The growth came from both bookstores and comic stores, which were both up around 12% over 2006 sales. The periodical comic market was $330 million in 2007, according to
