I have agonised a bit, googled it, and found this lovely graph – based on one popular author’s experiments with pricing:
I’m attaching to this post some graphs I generated. I did this early in 2010, based on then recent data that J. A. Konrath had posted to his blog. He’s a decent test bed for these numbers, as he had a number of ebooks out, some self-published and some published by a major publisher. These were priced all over the board. At the time, he was pricing his self-published books at $1.99, and the major publisher books were as high as the $8 vicinity. The commonality here is that none of them were getting much of a promotional push. There was no book tour, no advertising campaign so these numbers should be a realistic look at how price affects unit sales. It must be noted that I dropped two data points. He had two self-published books at $1.99 that sold so anamolously well that they blew out the chart. I dropped data to make the curve fit but the data I dropped would have biased this even farther to the low end of the curve. At the time, even Joe had no real explanation for why those books sold so well. He has since raised his price to $2.99 which is the same conclusion my data would lead you to. He’s a savvy cat, I’m guessing that sometime between then and now he also ran these numbers and raised his prices accordingly. (Update: yes, he did raise prices based on his observation of data.)
