I'm launching my first book next month (http://doubleyourfreelancingrate.com), which, like SideProjects, is based on many, many lot of conversations I've had with the freelancers/consultants who use my SaaS product.
The idea that developers don't pay for things - including infoproducts - is bunk. My book has netted just over $2,000 in prepurchase sales in the last week.
Kudos to the author for putting this together (the list of people you've interviewed is OUTSTANDING)
If your book does what it says, it's going to mitigate some of the risk of deciding what path to go down when starting a startup. That's potentially weeks/months/years that you might be saving me from chasing after an idea.
That's worth a lot more than $15 (and especially $3.75)
I'm selling my new book for $39 - and that's a discounted, prepurchase rate! But the value proposition is "if you read this book, and do what it says, and happen to raise your rates by even a $1 - that's another $2k in your pocket this year." Emphasize that your book will help people not waste time chasing the white rabbit, and you can charge a premium.
It doesn't matter if you have a great value proposition, without a solid sample I place it in the same bucket as unsolicited phone calls to lower my phone bill.
Of course, if you sell on your own site, you get everything. But Amazon has a lot of customers.
For the side projects book it would be nice to know who is behind it. There is plenty of information about the content, but who wrote it? Otherwise looks like a solid book!
My own book on app design comes out next month (http://nathanbarry.com/app-design-handbook) so I am trying to learn everything I can about other people's experiences.
Thanks Nathan! Really excited about the book launch - it's coming together very nicely, and I've got some great case studies that I'm still working on adding.