What if I told you that there is something absolutely free that you can do to help authors get free advertising on amazon? Keep reading. I save my allowance for nearly two years to put out the first one. Between you and me and the internet, my books have been around $800 to produce. See an interview with different authors here (Cost to self-publish a book) , but the short version is that $150 (she barters for services)- $1650 is the average. It’s hard to budget for ads when the upfront cost of a book (proofing, editing, cover design, formatting, distribution) is as high as it is. So authors write books, and they’re out there… BUT… people can only see these books if there is advertising leading the way to them, just like any other business.
It can can influence your peers to check out a book they might love, and also help authors get free advertising and exposure, so they can keep writing yoru favorite series. If you want a voice in this world, the one you use in your book review carries MASSIVE sway and influence.