I changed the e-book price on Warren Lane
from $4.99 to $0.99 on all platforms, from Saturday, Sept. 19 through Sunday, Sept. 27. I posted a link to the book on my Facebook page, and friends shared it. That resulted in 2 sales before the promotional sites started pushing the book on Monday. (Most people in my FB network who wanted the book already had a copy. Hence the low sales.)
The aim of the sale was to increase readership, not to make a profit. I knew I’d be taking a loss here. I spent about $600 to promote through a number of sites, which are listed below. I was going to post the actual sales figures for the book, because I like openness and transparency (I’m an open source developer by day). But I learned that publishing sales numbers violates the terms of service for both Amazon and Kobo. So the most I can do here is talk about how the promotions affected my sales rank.