The data displays the distribution of e-book unit sales on Amazon worldwide as of February 2017, broken down by publisher category. The source found that among the e-books sold on Amazon, 35% were published by independent (Indie) self-publishers.
Indie self-published | 35 |
Small/medium publisher | 19 |
Amazon imprint | 15 |
Big five published | 23 |
Uncategorized single-author | 8 |