Matthias Matting runs the German blog The Self Publisher’s Bible. In an attempt to determine what is myth and what is reality with regard to how Amazon’s sales algorithms work, and how sales ranking is determined, he ran a small experiment on Amazon’s German website with the help of 90 volunteers.
His principle objective was to determine if any of these three points was dominant in influencing sales ranking:
- Enrolment in KDP Select
- Organic sales
You can read more about his experiment here, but in summary, he uploaded four titles with two different price points (0.99 Euro and 2.99 Euro). Then he bought one copy of each book to get a sales rank for the books. Finally he asked his 90 volunteers to either buy the book or, if they were KindleUnlimited users, to read at least 10% of the book they downloaded.
Matthias summarises his findings…
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