KDP categories · Top KDP authors
Yumi Boutwell: Amazon KDP author data
As of Nov 6, 2026, Yumi Boutwell has 94 books on Amazon, 14 of them on a best-seller list in the last 30 days (best rank #8), mostly in Japanese, Language Instruction, Language Study & Reference.
| Median price | $6.99 |
|---|---|
| Price range (middle 50%) | $6.99 – $6.99 |
| Median reviews | 4 |
| Total reviews | 1,138 |
| New books (30 days) | 1 |
| Breakout books (30 days) | 0 |
What stands out
- Only 15% of the catalog charted in the last 30 days; sales rest on a few titles.
- Median price $6.99, 40% above the median of their main category, Japanese.
Yumi Boutwell's best-ranked books
-
Japanese Kanji for JLPT N5: Master the Japanese Language Proficiency Test N5
by Yumi Boutwell
- Price$4.99
- Rating4.5
- Reviews136
- Published2011-04
-
Learn Japanese through Haiku - Yosa Buson: Enjoy Japanese culture while building your vocabulary and grammar
by Yumi Boutwell
- Price$6.99
- Rating4.5
- Reviews2
- Published2025-05
-
Japanese Sentence Practice for JLPT N5: Master the Japanese Language Proficiency Test N5
by Yumi Boutwell
- Price$4.99
- Rating4.6
- Reviews16
- Published2023-12
-
Japanese Kanji Reading Practice: Master the Japanese Language Proficiency Test N5
by Yumi Boutwell
- Price$4.99
- Rating4.7
- Reviews5
- Published2025-01
-
Japanese Sentence Patterns for JLPT N5: Master the Japanese Language Proficiency Test N5
by Yumi Boutwell
- Price$4.99
- Rating4.4
- Reviews66
- Published2021-07
-
Japanese Grammar for JLPT N5: Essential Grammar, Audio Support, and Makoto+ Sentence Explorer Access Included (Japanese Language Proficiency Test N5 Book 3)
by Yumi Boutwell
- Price$4.99
- Rating4.6
- Reviews198
- Published2019-07
-
Japanese Grammar for JLPT N4: Master the Japanese Language Proficiency Test N4
by Yumi Boutwell
- Price$4.99
- Rating4.5
- Reviews25
- Published2022-06
-
Japanese Reading for JLPT N5: Master the Japanese Language Proficiency Test N5
by Yumi Boutwell
- Price$4.99
- Rating4.7
- Reviews176
- Published2019-12
-
Japanese Kanji for JLPT N4: Master the Japanese Language Proficiency Test N4
by Yumi Boutwell
- Price$4.99
- Rating4.3
- Reviews15
- Published2021-10
-
Japanese Vocabulary for JLPT N4: Master the Japanese Language Proficiency Test N4
by Yumi Boutwell
- Price$4.99
- Rating4.2
- Reviews37
- Published2017-07
Main categories
FAQ
How many books does Yumi Boutwell have on Amazon?
KDPTop tracks 94 of their books; 14 made an Amazon list in the last 30 days.
Which categories does Yumi Boutwell publish in?
Their books chart most often in Japanese, Language Instruction, Language Study & Reference.
How does Yumi Boutwell price their books?
The median price is $6.99; half of the books cost $6.99–$6.99.
Has Yumi Boutwell released new books recently?
1 new book in the last 30 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.