To channel patio11, you should probably raise your prices.
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.
Anecdotally, I'll pay up to $5 for a book on a whim if I think I might be interested. If it's more than $5, I download a sample and might by the book, if and when I even get around to reading the sample, and if I like the sample.
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.
If you want to sell on Amazon's KDP, you probably want to sell at a price point between $3 and $10, because that's the "70% zone". More, or less, and you only get to keep 35%.
Of course, if you sell on your own site, you get everything. But Amazon has a lot of customers.
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.