I came across an older article (April of this year) that notes that, in 2007, annual Graphic Novel sales hit $375 million dollars.
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.Which is awesome, of course ... except when you consider that $375 million is about the same as the (US + UK) first-day sales of Harry Potter and the Deathly Hallows on July 21 of that year.
Baby steps, folks. Baby steps.