Self publishing Books – 90 categories for successful indie writers

Diving into the self publishing world was definitely one of the best decisions of my life. Kindle publishing helped me realize a dream I did not knew I had in the first place: publishing books about computer security.

Looking back on that particular moment of self doubt and apprehension, I remember being torn by loads of questions. The most pressing of which was:

What about other indie writers on Amazon? How well are they doing? Is it really worth it?

I realize these are really three questions, but as you can understand, I was very confused back then.

Sure, I stumbled upon a few writer blog reports here and there. Some promised rocketing sales and a 6 figure income while others reported a couple of hundred dollars a month.

The author earnings reports also shed some light on the percentage of self published books and their success, but the answer was too broad to satisfy my hungry curiosity.

Things have changed since then.

Today, using Kindle Ranker we will explore tangible numbers and arguments about the success of the indie community and give you enough data to make an informed and peaceful decision about your indie career.

Kindle categories for successful indie writers

Kindle Ranker routinely collects the top 20 bestsellers in every book category and calculates the percentage of self published books in that list. Based on this data, we can reasonably consider that a category is dominated by indie writers if at least 15 books (75%) of its top 20 are self published.

 

As of this moment, there are 90 Kindle categories fulfilling this criterion….out of 5000!

Category name  Self published books  Median sales volume  Median price  New book releases  
Kindle eBooks -> Lesbian, Gay, Bisexual & Transgender eBooks -> Drama & Plays80%$753$2.9965%
Kindle eBooks -> Literature & Fiction -> Anthologies & Literature Collections -> LGBT80%$586$2.9930%
Kindle eBooks -> Romance -> LGBT -> Bisexual Romance80%$7,708$3.9985%
Kindle eBooks -> Romance -> LGBT -> Transgender Romance90%$1,088$2.9980%
Kindle eBooks -> Arts & Photography -> Graphic Design -> Graphic Arts -> Use of Color80%$279$9.990%
Kindle eBooks -> Arts & Photography -> Photography -> Travel -> Asia75%$111$3.990%
Kindle eBooks -> Children's eBooks -> Animals -> Birds80%$304$0.9920%
Kindle eBooks -> Nonfiction -> Children's Nonfiction -> Arts & Music -> Art -> Cartooning85%$110$3.9510%
Kindle eBooks -> Nonfiction -> Children's Nonfiction -> Arts & Music -> Art -> Drawing75%$111$3.9725%
Kindle eBooks -> Nonfiction -> Children's Nonfiction -> Computers -> Software75%$135$1.2110%
Kindle eBooks -> Cookbooks, Food & Wine -> Quick & Easy -> Microwave Cookery80%$83$2.9935%
Kindle eBooks -> Cookbooks, Food & Wine -> Regional & International -> Canadian80%$83$2.9915%
Kindle eBooks -> Cookbooks, Food & Wine -> Regional & International -> European -> Eastern European75%$83$2.995%
Kindle eBooks -> Cookbooks, Food & Wine -> Regional & International -> European -> German80%$83$2.9930%
Kindle eBooks -> Cookbooks, Food & Wine -> Regional & International -> European -> Hungarian75%$83$2.9915%
Kindle eBooks -> Cookbooks, Food & Wine -> Regional & International -> European -> Irish89%$83$2.9933%
Kindle eBooks -> Cookbooks, Food & Wine -> Regional & International -> European -> Polish84%$83$2.9911%
Kindle eBooks -> Cookbooks, Food & Wine -> Regional & International -> U.S. Regional -> African American80%$83$2.9930%
Kindle eBooks -> Cookbooks, Food & Wine -> Regional & International -> U.S. Regional -> Amish & Mennonite85%$83$2.9920%
Kindle eBooks -> Cookbooks, Food & Wine -> Regional & International -> U.S. Regional -> Cajun & Creole85%$83$2.9910%
Kindle eBooks -> Cookbooks, Food & Wine -> Special Occasions -> Tablesetting80%$390$3.4915%
Kindle eBooks -> Humor & Entertainment -> Activities, Puzzles & Games -> Crosswords -> Cryptic100%$83$2.9950%
Kindle eBooks -> Humor & Entertainment -> Activities, Puzzles & Games -> Gambling -> Lotteries75%$83$2.9910%
Kindle eBooks -> Humor & Entertainment -> Activities, Puzzles & Games -> Quizzes80%$335$3.9910%
Kindle eBooks -> Humor & Entertainment -> Activities, Puzzles & Games -> Reference75%$558$3.995%
Kindle eBooks -> Humor & Entertainment -> Activities, Puzzles & Games -> Travel Games75%$83$2.9910%
Kindle eBooks -> Humor & Entertainment -> Activities, Puzzles & Games -> Trivia80%$446$3.9910%
Kindle eBooks -> Health, Fitness & Dieting -> Nutrition -> Macrobiotics75%$586$2.9945%
Kindle eBooks -> Self-Help -> Inner Child80%$893$3.9925%
Kindle eBooks -> Self-Help -> Journal Writing75%$502$2.990%
Kindle eBooks -> Crafts, Hobbies & Home -> Antiques & Collectibles75%$753$2.9930%
Kindle eBooks -> Crafts, Hobbies & Home -> Antiques & Collectibles -> Posters78%$111$3.990%
Kindle eBooks -> Crafts, Hobbies & Home -> Antiques & Collectibles -> Sports Cards -> Basketball100%$69$2.4925%
Kindle eBooks -> Crafts, Hobbies & Home -> Crafts & Hobbies -> Cross-Stitch75%$83$2.9915%
Kindle eBooks -> Crafts, Hobbies & Home -> Crafts & Hobbies -> Dried Flowers100%$83$2.9943%
Kindle eBooks -> Crafts, Hobbies & Home -> Crafts & Hobbies -> Model Trains80%$111$3.9910%
Kindle eBooks -> Crafts, Hobbies & Home -> Crafts & Hobbies -> Needlepoint75%$83$2.9925%
Kindle eBooks -> Crafts, Hobbies & Home -> Crafts & Hobbies -> Ribbons82%$83$2.9927%
Kindle eBooks -> Crafts, Hobbies & Home -> Home Design -> Remodeling & Renovation -> Energy Efficiency100%$27$0.9933%
Kindle eBooks -> Crafts, Hobbies & Home -> How-to & Home Improvements -> Roofing100%$194$0.990%
Kindle eBooks -> Crafts, Hobbies & Home -> How-to & Home Improvements -> Small Appliance Repair100%$27$0.990%
Kindle eBooks -> Crafts, Hobbies & Home -> Interior Design -> Floors100%$111$3.990%
Kindle eBooks -> Law -> Practical Guides -> Living Wills75%$139$4.990%
Kindle eBooks -> Medical eBooks -> Specialties -> Emergency Medicine75%$502$2.995%
Kindle eBooks -> Parenting & Relationships -> Parenting -> Babies & Toddlers -> Toddlers75%$27$0.9915%
Kindle eBooks -> Arts & Photography -> Architecture -> International -> African100%$84$3.000%
Kindle eBooks -> Arts & Photography -> Architecture -> International -> Middle Eastern75%$111$3.9925%
Kindle eBooks -> Arts & Photography -> Architecture -> International -> United States (Southern)80%$84$3.0020%
Kindle eBooks -> Reference -> Atlases & Maps -> United States100%$27$0.990%
Kindle eBooks -> Reference -> Catalogs & Directories -> Catalogs79%$83$2.9911%
Kindle eBooks -> Education & Teaching -> Studying & Workbooks -> Book Notes90%$1,088$2.9920%
Kindle eBooks -> Education & Teaching -> Higher & Continuing Education -> Graduate School -> Law75%$55$1.9913%
Kindle eBooks -> Education & Teaching -> Higher & Continuing Education -> Graduate School -> Medical88%$83$2.996%
Kindle eBooks -> Education & Teaching -> Test Preparation -> Graduate & Professional -> Teaching77%$83$2.998%
Kindle eBooks -> Reference -> Words, Language & Grammar -> Braille100%$83$2.990%
Kindle eBooks -> Religion & Spirituality -> Other Eastern Religions & Sacred Texts -> Sikhism75%$83$2.9915%
Kindle eBooks -> Sports & Outdoors -> Individual Sports -> Martial Arts -> Judo79%$83$2.9911%
Kindle eBooks -> Sports & Outdoors -> Individual Sports -> Martial Arts -> Tai Kwon Do77%$55$1.990%
Kindle eBooks -> Sports & Outdoors -> Racket Sports -> Squash80%$83$2.990%
Kindle eBooks -> Sports & Outdoors -> Racket Sports -> Table Tennis78%$195$6.990%
Kindle eBooks -> Travel -> United States -> States -> North Dakota100%$83$2.990%
Kindle eBooks -> Computers & Technology -> Hardware -> Mainframes & Minicomputers85%$83$2.9920%
Kindle eBooks -> Reference -> Dictionaries & Thesauruses -> Translation Dictionaries86%$167$5.9929%
Kindle eBooks -> Arts & Photography -> Photography -> Erotica75%$335$3.9930%
Kindle eBooks -> Arts & Photography -> Art -> Erotica85%$83$2.9910%
Kindle eBooks -> Romance -> Holidays80%$12,474$2.9940%
Kindle eBooks -> Romance -> Inspirational -> Amish85%$1,496$0.9985%
Kindle eBooks -> Romance -> Sports75%$22,866$3.4985%
Kindle eBooks -> Literature & Fiction -> Foreign Language Fiction -> Other Languages -> Finnish80%$196$7.000%
Kindle eBooks -> Literature & Fiction -> Foreign Language Fiction -> Other Languages -> Swahili100%$83$2.990%
Kindle eBooks -> Literature & Fiction -> Short Stories -> LGBT75%$1,172$2.9975%
Kindle eBooks -> Literature & Fiction -> Erotica -> Action & Adventure90%$3,851$2.9920%
Kindle eBooks -> Literature & Fiction -> Erotica -> BDSM75%$5,362$3.9935%
Kindle eBooks -> Lesbian, Gay, Bisexual & Transgender eBooks -> Erotica80%$2,234$3.9960%
Kindle eBooks -> Lesbian, Gay, Bisexual & Transgender eBooks -> Erotica -> Bisexual85%$1,255$2.9950%
Kindle eBooks -> Lesbian, Gay, Bisexual & Transgender eBooks -> Erotica -> Gay80%$1,452$3.9965%
Kindle eBooks -> Lesbian, Gay, Bisexual & Transgender eBooks -> Erotica -> Lesbian85%$1,004$2.9945%
Kindle eBooks -> Lesbian, Gay, Bisexual & Transgender eBooks -> Erotica -> Transgender90%$1,172$3.4970%
Kindle eBooks -> Literature & Fiction -> Erotica -> Historical80%$1,816$4.9935%
Kindle eBooks -> Literature & Fiction -> Erotica -> Mystery75%$1,841$2.9915%
Kindle eBooks -> Literature & Fiction -> Erotica -> Science Fiction75%$1,088$2.9935%
Kindle eBooks -> Literature & Fiction -> Erotica -> Thrillers95%$3,599$2.9925%
Kindle eBooks -> Literature & Fiction -> Erotica -> Victorian80%$1,676$4.9945%
Kindle eBooks -> Literature & Fiction -> Erotica -> Westerns95%$2,388$4.4965%
Kindle eBooks -> Foreign Languages -> Other Languages -> Luxembourgish80%$223$7.9915%
Kindle eBooks -> Foreign Languages -> Spanish -> Erótica85%$173$1.5525%
Kindle eBooks -> Foreign Languages -> Spanish -> Humor85%$83$2.9930%
Kindle eBooks -> Foreign Languages -> Spanish -> Romance100%$1,088$2.9980%
Kindle eBooks -> Foreign Languages -> Portuguese -> Teen & Young Adult85%$83$2.9935%
Kindle eBooks -> Romance -> Inspirational -> Christian -> Historical75%$1,940$0.9960%

Most of the categories showing a 100% rate of self published books only hold a couple of books in their stores. They are hardly of any interest, especially given the low sales volume reported.

The Kindle eBooks -> Foreign Languages -> Spanish -> Romance category, however, is one of the few exceptions. The top 20 books are all self published and enjoy a relatively mild success amongst readers (over $1100 in monthly sales volume). If you manage to publish a few books in this category, you could earn a decent income.

The bigger winner in terms of popularity though is the Kindle eBooks -> Romance -> Sports category. A very tempting $22,866 in sales volume. Many of the books are self published (75%) and follow a busy release schedule (85% of books released during the last 3 months).

Erotic books are heavily present on the list – 16 categories showing at least an 85% indie dominance and decent sales volume. I can’t say I was really surprised since Erotica is one of the recurring themes in indie blogs.

Non fiction books represent a good chunk of the categories listed above: Kindle eBooks -> Education & Teaching -> Higher & Continuing Education -> Graduate School -> Medical, Kindle eBooks -> Crafts, Hobbies & Home -> Crafts & Hobbies -> Ribbons, etc. But they are not very popular amongst readers (barely averaging a few hundred bucks a month in sales, whereas Erotica themes are in the thousands).

Balanced Kindle categories

As you just saw, categories dominated by indie writers are the exception rather than the rule. Around half the Kindle categories feature less than 20% of self published books in the top 20 bestsellers. That’s close to 2500 categories with less than 4 indie books in the top 20.

Therefore, let us take a more reasonable approach. We will look at categories with a balanced ratio of indie writers and household publishers. Let’s say between 45% and 55% indie book in the top 20.

 

Again, if we check Kindle Ranker, we get 394 categories. I narrowed them down to 90 to only keep those with a decent sales volume (over a $1000 a month):

Category name  Self published books  Median sales volume  Median price  New book releases  
Kindle eBooks -> Science Fiction & Fantasy -> Fantasy -> LGBT50%$1,787$3.9965%
Kindle eBooks -> Romance -> Clean & Wholesome55%$4,839$1.4960%
Kindle eBooks -> Health, Fitness & Dieting -> Counseling & Psychology -> Mental Health -> Behaviour50%$2,684$7.9915%
Kindle eBooks -> Health, Fitness & Dieting -> Counseling & Psychology -> Cognitive Neuroscience & Cognitive Neuropsychology50%$1,536$4.9935%
Kindle eBooks -> Science Fiction & Fantasy -> Fantasy -> Romantic45%$11,842$3.9950%
Kindle eBooks -> Teen & Young Adult -> Literature & Fiction -> Politics & Government55%$1,564$3.9915%
Kindle eBooks -> Teen & Young Adult -> Literature & Fiction -> Social & Family Issues -> Bullying45%$1,675$3.9925%
Kindle eBooks -> Teen & Young Adult -> Literature & Fiction -> Social & Family Issues -> Dating & Sex55%$8,602$3.9940%
Kindle eBooks -> Teen & Young Adult -> Literature & Fiction -> Social & Family Issues -> Family -> Alternative Family45%$1,228$3.9910%
Kindle eBooks -> Teen & Young Adult -> Literature & Fiction -> Social & Family Issues -> Values & Virtues55%$2,934$4.9920%
Kindle eBooks -> Teen & Young Adult -> Literature & Fiction -> Visionary & Metaphysical45%$1,564$3.9915%
Kindle eBooks -> Cookbooks, Food & Wine -> Special Diet -> Ketogenic45%$1,925$2.9940%
Kindle eBooks -> Biographies & Memoirs -> Reference & Collections45%$1,257$4.9910%
Kindle eBooks -> Business & Money -> Marketing & Sales -> Advertising45%$1,508$4.4910%
Kindle eBooks -> Business & Money -> Personal Finance -> Budgeting & Money Management -> Budgeting45%$1,536$4.9915%
Kindle eBooks -> Children's eBooks -> Fairy Tales, Folk Tales & Myths -> Collections45%$1,340$3.9935%
Kindle eBooks -> Humor & Entertainment50%$13,182$3.9925%
Kindle eBooks -> Lesbian, Gay, Bisexual & Transgender eBooks50%$16,758$3.9965%
Kindle eBooks -> Health, Fitness & Dieting -> Counseling & Psychology -> Forensic Psychology50%$1,228$3.9915%
Kindle eBooks -> Health, Fitness & Dieting -> Addiction & Recovery -> Drug Dependency45%$1,341$5.995%
Kindle eBooks -> Crafts, Hobbies & Home -> Animal Care & Pets -> Dogs55%$1,564$3.9915%
Kindle eBooks -> Literature & Fiction -> Drama & Plays50%$2,569$3.9950%
Kindle eBooks -> Science Fiction & Fantasy -> Fantasy -> Dark Fantasy45%$18,657$3.9965%
Kindle eBooks -> Literature & Fiction -> Genre Fiction -> Westerns50%$3,797$0.9990%
Kindle eBooks -> Mystery, Thriller & Suspense -> Mystery -> Hard-Boiled50%$11,457$4.9925%
Kindle eBooks -> Education & Teaching -> Teacher Resources -> Education Theory45%$3,213$4.9925%
Kindle eBooks -> Education & Teaching -> Teacher Resources -> Education Theory -> Educational Psychology47%$3,636$9.9921%
Kindle eBooks -> Politics & Social Sciences -> Social Sciences -> Reference55%$1,426$7.2810%
Kindle eBooks -> Engineering & Transportation -> Engineering -> Electrical & Electronics55%$2,233$9.9740%
Kindle eBooks -> Reference -> Foreign Language Study & Reference45%$1,452$3.9910%
Kindle eBooks -> Reference -> Words, Language & Grammar -> Reading Skills55%$1,340$3.9915%
Kindle eBooks -> Religion & Spirituality -> Religious Fiction45%$3,880$0.9985%
Kindle eBooks -> Religion & Spirituality -> Religious Fiction -> Romance45%$3,215$0.9965%
Kindle eBooks -> Romance -> Historical Romance -> Regency50%$8,413$1.9960%
Kindle eBooks -> Science Fiction & Fantasy -> Fantasy -> Arthurian50%$7,038$3.9915%
Kindle eBooks -> Lesbian, Gay, Bisexual & Transgender eBooks -> Literature & Fiction45%$16,758$3.9975%
Kindle eBooks -> Teen & Young Adult -> Horror45%$3,909$6.070%
Kindle eBooks -> Religion & Spirituality -> Christian Books & Bibles -> Christian Fiction -> Westerns55%$2,411$0.9990%
Kindle eBooks -> Romance -> Paranormal55%$50,385$3.9985%
Kindle eBooks -> Romance -> Time Travel55%$10,836$3.9950%
Kindle eBooks -> Mystery, Thriller & Suspense -> Mystery -> International Mystery & Crime45%$16,906$4.9915%
Kindle eBooks -> Romance -> Historical Romance -> Medieval50%$8,623$2.9960%
Kindle eBooks -> Romance -> Historical Romance -> Scottish55%$6,630$1.9960%
Kindle eBooks -> Romance -> Historical Romance -> Victorian50%$5,799$1.4975%
Kindle eBooks -> Computers & Technology -> Programming -> Games45%$1,301$15.4920%
Kindle eBooks -> Romance -> Paranormal -> Angels50%$12,289$3.9960%
Kindle eBooks -> Romance -> Paranormal -> Demons & Devils45%$11,553$2.9960%
Kindle eBooks -> Romance -> Paranormal -> Ghosts45%$12,065$3.9965%
Kindle eBooks -> Romance -> Paranormal -> Psychics55%$13,853$3.9965%
Kindle eBooks -> Romance -> Paranormal -> Witches & Wizards45%$13,965$3.9960%
Kindle eBooks -> Education & Teaching -> Studying & Workbooks50%$2,587$4.2020%
Kindle eBooks -> Romance -> LGBT -> Gay Romance55%$13,182$3.9985%
Kindle eBooks -> Romance -> Gothic55%$11,281$3.9555%
Kindle eBooks -> Romance -> Inspirational45%$14,222$2.4970%
Kindle eBooks -> Romance -> LGBT -> Lesbian Romance55%$6,147$4.9990%
Kindle eBooks -> Romance -> Romantic Comedy55%$106,491$2.9970%
Kindle eBooks -> Science Fiction & Fantasy -> Fantasy -> Myths & Legends -> Asian55%$7,485$3.9950%
Kindle eBooks -> Science Fiction & Fantasy -> Fantasy -> Myths & Legends -> Greek & Roman50%$7,261$3.9940%
Kindle eBooks -> Science Fiction & Fantasy -> Fantasy -> Superhero45%$12,512$3.9975%
Kindle eBooks -> Science Fiction & Fantasy -> Science Fiction -> Colonization45%$11,954$3.9955%
Kindle eBooks -> Science Fiction & Fantasy -> Science Fiction -> Metaphysical & Visionary50%$10,613$3.9940%
Kindle eBooks -> Science Fiction & Fantasy -> Science Fiction -> Military -> Space Marine55%$12,736$3.9965%
Kindle eBooks -> Teen & Young Adult -> Historical Fiction -> Medieval45%$4,191$4.9915%
Kindle eBooks -> Teen & Young Adult -> Literature & Fiction -> Sports55%$1,787$3.9925%
Kindle eBooks -> Teen & Young Adult -> Mysteries & Thrillers -> Spies50%$2,457$3.9920%
Kindle eBooks -> Teen & Young Adult -> Romance -> Contemporary55%$11,618$3.9945%
Kindle eBooks -> Teen & Young Adult -> Romance -> Paranormal & Fantasy55%$12,289$3.9915%
Kindle eBooks -> Teen & Young Adult -> Science Fiction & Fantasy -> Fantasy -> Myths & Legends50%$12,320$4.4920%
Kindle eBooks -> Teen & Young Adult -> Science Fiction & Fantasy -> Fantasy -> Myths & Legends -> Arthurian45%$7,596$3.9920%
Kindle eBooks -> Teen & Young Adult -> Science Fiction & Fantasy -> Fantasy -> Sword & Sorcery45%$15,262$4.7425%
Kindle eBooks -> Children's eBooks -> Early Learning50%$2,969$3.0315%
Kindle eBooks -> Mystery, Thriller & Suspense -> Crime Fiction -> Organized Crime50%$12,624$3.9965%
Kindle eBooks -> Mystery, Thriller & Suspense -> Mystery -> Cozy -> Crafts & Hobbies45%$2,411$0.9955%
Kindle eBooks -> Mystery, Thriller & Suspense -> Mystery -> Cozy -> Culinary50%$8,037$2.9955%
Kindle eBooks -> Mystery, Thriller & Suspense -> Suspense -> Paranormal -> Vampires45%$11,618$3.9935%
Kindle eBooks -> Mystery, Thriller & Suspense -> Suspense -> Paranormal -> Werewolves & Shifters50%$11,954$3.9955%
Kindle eBooks -> Literature & Fiction -> Action & Adventure -> LGBT45%$1,452$3.9945%
Kindle eBooks -> Literature & Fiction -> Action & Adventure -> Men's Adventure45%$18,722$4.9930%
Kindle eBooks -> Literature & Fiction -> Action & Adventure -> Romance45%$17,497$2.9965%
Kindle eBooks -> Literature & Fiction -> Action & Adventure -> Short Stories45%$1,758$2.9935%
Kindle eBooks -> Literature & Fiction -> Contemporary Fiction -> Urban53%$6,613$2.9953%
Kindle eBooks -> Literature & Fiction -> Foreign Language Fiction55%$1,590$2.9955%
Kindle eBooks -> Literature & Fiction -> Historical Fiction -> Regency50%$2,661$0.9975%
Kindle eBooks -> Literature & Fiction -> Historical Fiction -> Scottish45%$13,452$4.4945%
Kindle eBooks -> Literature & Fiction -> Mythology & Folk Tales -> Mythology50%$10,836$3.9960%
Kindle eBooks -> Literature & Fiction -> British -> Historical55%$4,520$2.9950%
Kindle eBooks -> Literature & Fiction -> Erotica -> Romantic Erotica45%$4,353$2.9935%
Kindle eBooks -> Foreign Languages55%$1,423$2.9960%
Kindle eBooks -> Foreign Languages -> Spanish55%$1,423$2.9960%
Kindle eBooks -> Religion & Spirituality -> Spirituality -> Inspirational -> Fiction55%$1,758$2.9970%

The big winner is Kindle eBooks -> Romance -> Romantic Comedy with an average of $100 000 in monthly sales and a balanced indie/traditional publisher distribution. The competition to make it to this particular category’s bestseller lit is pretty tough (around 90 sales a day, check it here), but you can see that indie writers do make the cut!

This new list is mostly dominated by Fiction categories: Kindle eBooks -> Science Fiction & Fantasy -> Fantasy -> Myths & Legends -> AsianKindle eBooks -> Teen & Young Adult -> Horror, etc.

Do not hesitate to go through these gems looking for your future gig. You can be assured that:

  • A) you have a decent readership community given the volume sales displayed
  • B) other indie writers made it to the top 20, so why shoudn’t you try?

I hope this data helps you get a clearer view of the position of indie writers in the Kindle market. If you have any questions let me know by email, or better yet, have a look at Kindle Ranker to dig out promising categories.

Cheers,

Alex from KR

1 thought on “Self publishing Books – 90 categories for successful indie writers

  1. […] best sellers in all of Amazon’s 10 000 categories (some categories have less than 20 books. Some currently have 0 books […]

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