In the first four months of 2018 publishers revenue increased by $172.8 million (+5.5%) compared to the same period in 2017. Downloaded audio continued its significant growth and revenue for eBooks declined slightly. eBook sales generated $358 million dollars and declined by 3.8% and during the same period last year the format brought in $373 million dollars. Digital … [Read more...] about Ebook sales decline 3% in first four months of 2018