With the mega-success of JK Rowling and her Harry Potter series, many believe children’s book writers are raking in the dough. “Waterstone’s had reported that 10 times more new children’s books were being released every month now compared with 2000, and it found that publishers were spending much more on marketing the genre.” But a new survey says that children’s book writers earn barely subsistance wages – a full third of them earn less than the national minimum wage of £8,827 a year.