In the financial year 2016 - 2017, I made 86 % of my book sales income from ebook sales. (thecreativepenn.com)
That slow and steady sales income for an author can make the difference between keeping them in the game, or not. (susankayequinn.com)
While the average medical sales income has changed very little since the 2011 report, over half of all respondents reported getting a salary increase during the past 12 months. (medreps.com)