By | September 14 2012 10:58 AM

After seeing the unprecedented success of a title like "Fifty Shades of Grey," casual readers and publishing industry analysts alike were led to wonder what the future of digital publishing held for the book industry as Amazon Inc. (Nasdaq: AMZN) continues to edge out traditional publishing houses and retailers alike with its aggressive competitive pricing scheme. In an email sent to literary agents unearthed by GigaOM on Thursday, Amazon Publishing Vice President Jeff Belle revealed some sales numbers that shed light on the state of the company's new branch.