Since tracking, over 8000 copies of this PHP book’s free PDF have been downloaded through lulu.com as well as directly through this book blog! This doesn’t include the downloads through other websites who are also hosting the PDF file completely legally.
To date, there have also been 97 revenue generating print copies of the paperback sold and 60 digital Kindle editions sold. The majority of sales are through Amazon.com, generating a lot less income per book than copies sold through lulu.com.
- Total Revenue (all sources): $501.18
- Costs to create the book: ~$600
(computer monitor, ISBN, review copies, office space rent, etc.)
- Hours spent writing: 175
In other words, with costs included, I’ve lost ~$100 creating the book. If that was not factored in, the hourly wage for creating the book so far would be $2.86/hour (in reality it is $0.00).
With over 8,000 downloads which are and will always remain free in PDF form, a donation of $1 for each download would have changed it to ~$33/hour. Would you consider purchasing a paperback PHP book copy today or donating to my hosting costs when downloading a free PDF of the PHP reference book? Thanks!