This has a lot of pieces to it. Not sure if this is the best place for this question, but Medievalist has it covered. I'll add a quick bit of information. I'm not going to sugarcoat it. Reviews are hard to get. They just are. Receiving bad ones or not receiving any is something writers have to deal with when they enter this career. Not having tough skin might make you crumble, so you have to be strong. I'll try my best to break it down using arithmetic. If you compare book sales to the amount of reviews, you get an ugly picture. Let's look at one example:
The first book from the
Divergent series because it was released further in the era of buying books online.
On February 7, 2014, Rob Friedman, co-chairman of the Lionsgate motion picture group, which produced the first movie, said the
Divergent series has at least 13 million books in circulation (the books in circulation are probably higher now as sales increase for a book before the movie comes out and this interview occurred almost two months ago) Here is the website for reference.
http://www.hollywoodreporter.com/news/lionsgate-execs-talk-divergent-release-678229
Okay, let's say the first book counts for a third of those books in circulation. That equals about 4.3 million books. Let's look at the top review sites--Amazon, Goodreads, Barnes and Nobles.
Divergent review totals
Amazon - 12,259
Barnes and Noble - 7,706
Goodreads - 64,738
That equals 84,703. I won't subtract overlap, although many people write reviews on several sites and sometimes even review a book twice on the same site.
There most likely isn't this many, but let's say we add 200,000 extra reviews from all around the internet and from newspapers that we might have missed and add that to our total.
284,703. Let's round that up to 300,000. Divide 4.3 million by 300,000 and you get roughly 1 out of every 14 people will write a review, but if you are looking for it to be reviewed on major sites like Amazon and Goodreads, the number is even less. I didn't even factor in how many people borrow the book from the library or from a family member or from a friend, or the people who buy the book used. That might triple the amount of people who read the book compared to reviews given.
The life of writer is tough. We write letters, but we are ruled by numbers. Don't get me wrong, writing the best book ever is the most important piece, so try not to be discouraged, but you have to be realistic. After the writing is done, this is a numbers game.