Normally self-plublished eBooks are #1 best-seller why? - How sell eBooks

If we see rank sales and prices we can analyze than all first sales cost is
0,99$. Why exactly 0,99$?: It's lower price than you can sell in KDP Amazon.
The way the KDP works is that Amazon takes a cut of your sale price as a
commission and you get to keep the rest. However, [...]

http://www.howsellebooks.com/normally-self-plublished-ebooks-are-1-best-seller-why/