The 5 reasons books don't sell on Amazon
After scoring thousands of book listings, the same five problems show up over and over. Most struggling books have at least three of them at the same time.
1. Nobody can find your book
This is the big one. If your KDP keywords, categories, and title don't match the words real readers type into Amazon's search bar, your book simply doesn't appear when they look. It doesn't matter how good the cover is — they never see it.
How to tell: open Amazon, type the kind of phrase your ideal reader would search ("cosy mystery set in Cornwall", "ADHD productivity for women"), and scroll. If your book isn't on page one or two, this is your problem.
2. Your cover doesn't look like the genre
Readers scan covers in genre conventions. A literary-fiction cover on a thriller looks wrong, even if it's beautiful. A cover that doesn't instantly say "this is the kind of book you already love" gets skipped.
How to tell: screenshot the top 20 books in your sub-category. Drop your cover into the same grid. Does it blend in — or stick out for the wrong reason?
3. Your description reads like a summary, not a hook
The book description is a sales page, not a synopsis. A description that starts "Sarah is a 34-year-old accountant who…" is dead on arrival. A description that opens with the emotional hook ("She thought she'd escaped the family curse. The wedding invitation says otherwise.") sells copies.
How to tell: read your first two lines out loud. If they sound like a Wikipedia entry, rewrite them.
4. You have fewer than 25 reviews
Right or wrong, Amazon shoppers use reviews as a proxy for "is this book real?". Below 25 reviews, conversion drops sharply. Below 10, most readers won't even click the buy button. This isn't your writing — it's social proof.
How to tell: count your reviews. Under 25? That's the bottleneck.
5. You're in the wrong category
Amazon's category tree is a maze. Authors regularly end up in categories like "Fiction › Religious › Christian › Romance" when their book is mainstream women's fiction with one churchgoing character. The wrong category means you compete against the wrong books and miss the readers who actually want yours.
How to tell: look at the "Best Sellers Rank" on your book page. If the categories listed don't match the books you'd shelve next to yours, you're in the wrong place.
Where to start
Don't try to fix everything at once. Diagnose first, then fix the one that's hurting most. The Book Discoverability Score does the diagnosis for you — it scans your live Amazon listing and tells you which of these five problems is dragging you down, with specific rewrites for keywords, description, and categories.
It's free and takes about 60 seconds. No login, no credit card.