According to the Bookseller, Charlotte Roche's Feuchtgebiete has outsold all other novels on Amazon in the USA, Britain, Canada, France, Germany and Japan. If you see what I mean.
Having said I wouldn't like to translate it, I expect British publishers won't find an established translator to touch it with a bargepole. If you fall into this category, feel free to contact me. I'd be quite happy to go back on my word for the lovely Ms Roche and her blockbuster anti-hygiene novel. We'd have to change the title though.