34% in sales 34% in sales it has also authors earned less than $250 half of authors never even earn $500 earn $500 a year earn $500 a year sales to match an article UK Guardian this 2012 Guardian article Statistics published in The Guardian $10000 a year failed The Guardian failed in 2012 Guardian this report Guardian failed in 2012 didn't break $500 34% in sales this 2012 article by the Guardian 34% in sales in 2012 Statistics published in The Guardian Guardian earn $500 a year Statistics published in The Guardian in 2012 this 2012 Guardian article UK Guardian failed The Guardian failed $10,000 per year The Guardian make more money 34% in sales sales to match - theguardian.com Statistics published in The Guardian UK Guardian