KDP categories · Top KDP authors
Reference (Japanese, Kindle eBooks): Amazon KDP category data
Amazon Kindle eBooks Best Sellers data for Reference (Japanese, Kindle eBooks), updated Nov 3, 2026: median price $7.08, median 6 reviews, average rating 4.1 and a KDPTop opportunity score of 24/100 (highly competitive).
| Price range (middle 50%) | $2.99 – $7.79 |
|---|---|
| Average rating | 4.1 |
| New releases (90 days) | 4% |
| Books on the list | 100 |
| Store | Kindle eBooks |
What stands out
- Its median reviews are 30% of the parent category Japanese (20), one of the easier corners under it.
- Its review barrier is lower than in 87% of Kindle eBooks categories: the median best seller has only 6 reviews, so new books can chart with few.
- Only 4% of its best sellers are under 90 days old, fewer than in 82% of Kindle eBooks categories: established titles hold the list.
Top 10 Reference best sellers
-
Learn Japanese with 120 Short Stories - 4 Books in 1: A Story-Based Reading Method for Adults with a Step-by-Step 120-Day Action Plan to Progress from ... in Just 30 Minutes a Day (Japanese Edition)
- List rank#1
- Price$0.99
- Rating5.0
- Reviews1
-
The Best Pattern 238 of Lace and Crochet (Japanese Edition)
by Applemints
- List rank#2
- Price$8.39
- Rating4.5
- Reviews14
-
Lace Work of the Floral Design 100 (Japanese Edition)
by Applemints
- List rank#3
- Price$7.72
- Rating4.2
- Reviews6
-
Beautiful women at the gym vol three AI Photogravure (Japanese Edition)
by SUIPIKKUSYUPPAN
- List rank#4
- Price$2.99
- Rating4.0
- Reviews2
-
playboy bunny (Japanese Edition)
by happy
- List rank#5
- Price$2.99
- Rating2.8
- Reviews7
-
AI beauty photo book A relaxing sex date at a hotel with an older sister who looks good in red underwear Contains 30 photos (Japanese Edition)
by RURURUTA
- List rank#6
- Price$2.99
- Rating2.4
- Reviews6
-
Japanese crochet accessories to harmonize with a yukata (Japanese Edition)
by Applemints
- List rank#7
- Price$7.34
- Reviews-
-
AI beauty photo collection Sexy Lady of Yacht Harbor 105 pages VOL10 (Japanese Edition)
by AI Photo King
- List rank#8
- Price$2.99
- Rating5.0
- Reviews2
-
A book of real intentions given to aspiring light novel writers by active writers (Japanese Edition)
by nominomiso
- List rank#9
- Price$3.25
- Rating4.3
- Reviews151
-
AI Male My dedicated subordinates (Japanese Edition)
by MISORA
- List rank#10
- Price$2.99
- Reviews-
FAQ
Is Reference a good niche for Amazon KDP?
Its KDPTop opportunity score is 24/100, which makes it highly competitive. The median best seller has 6 reviews and sells for $7.08.
How many reviews do you need to rank in Reference?
The median best seller has 6 reviews, and 97% of them have fewer than 100.
What do Reference best sellers cost?
The median price is $7.08; half of the best sellers are priced between $2.99 and $7.79.
Can new books break into Reference?
4% of the current best sellers were released in the last 90 days.
About this data
Data comes from KDPTop's daily crawl of Amazon's public Best Sellers pages; medians use the latest list. The opportunity score (0–100, higher is easier to enter) combines the review barrier, the share of low-review books, list turnover, new-release share and price.