Sara Sheridan writing in Huffington Post:
how much does a writer have to sell to make it?
Average earnings in the UK were around £26,500 in 2012. To make this amount on a book contract for a paperback edition selling at £7.99 that pays 10% a writer would need to sell 33,166 copies a year. And that’s if the book isn’t discounted as part of a 3 for 2 promotion, for example. That is a lot of books! To put it in perspective to get to number one in the UK paperback chart last month you’d have needed to sell almost 20,000 copies a week. This means that going to number 1 doesn’t even earn you the national average wage (and that book may have taken the writer months or even years to produce). The odds of making a mint are very long – writing is a risky profession.