American printing houses: We need to talk.
I coordinate an erotic comic anthology called Smut Peddler. The 2014 edition is on Kickstarter right now, and it's slaying. Owning. Knockin' 'em dead. Far and away, the most popular KS project I've ever run. And I'm glad its been so well-received, because otherwise it wouldn't be worth the aggravation.
Have you ever tried to print comic book porno? Not a picnic. I know where to look, thanks to two years of experience and the aid of a freelance print production manager, but it still took two weeks and a dozen price quotes. I had to assemble a PDF of what I call "the black diamond pages," or the most potentially objectionable content, to send around with the quote requests. I had to double and triple-check. "There is sex in this. There are sex organs in this. There is penetration in this. Is that okay? Are you sure? Very sure? Did you see the PDF?"