Top Ten Best-Selling Ebooks -- Week of July 12

John Green and Penguin Random House have reason to celebrate. Green's novel The Fault in Our Stars marks its tenth straight week in the No. 1 spot on the Digital Book World Ebook Best-Seller List.

Sales of the ebook are being buoyed up by the hit movie adaptation, which is among the year's most successful at the box office.

But the title is also benefiting from a low price: just $4.99 as of the past week.

The top ten best-selling ebooks for the week of July 12:

1. The Fault in Our Stars by John Green (Penguin Random House) -- $4.99

2. Unbroken: A World War II Story of Survival, Resilience, and Redemption by Laura Hillenbrand (Penguin Random House) -- $11.99

3. Act of War: A Thriller by Brad Thor (Simon & Schuster) --$12.99

4. Invisible by James Patterson; David Ellis (Hachette) -- $8.99

5. The Goldfinch: A Novel (Pulitzer Prize for Fiction) by Donna Tartt (Hachette) -- $6.99

6. Gone Girl: A Novel by Gillian Flynn (Penguin Random House) -- $8.52

7. Top Secret Twenty-one: A Stephanie Plum Novel by Janet Evanovich (Penguin Random House) -- $10.99

8. The Silkworm (Cormoran Strike Series #2) by Robert Galbraith (Hachette) -- $8.99

9. Chill Factor: A Novel by Sandra Brown (Simon & Schuster) -- $1.99

10. Orphan Train: A Novel by Christina Baker Kline (HarperCollins) -- $6.99