Some interesting findings on book sales from advertising.
Following my Call to Arms, a number of you responded by sharing with me your book marketing experience. I now have about a hundred responses by some fifty authors. Although some of the responses were expected, there were quite a few surprises in there for me.
For anyone wishing to take a look at the raw data, you can download this Excel spreadsheet. I grouped the results according to whether the book was offered full-price, discounted or free. I also have a fourth category titled Other, that includes any entries where this was not specified.
To compare the various ad media, I came up with a number that represents the ratio between number of sales and cost of advertising. In other word, if you spent $1 and had one sale, then this number would be one. If you spent $1 and had two sales, the number would be two, etc.
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