KDP categories · Top KDP authors
KJOS: Amazon KDP author data
As of Nov 6, 2026, KJOS has 26 books on Amazon, 18 of them on a best-seller list in the last 30 days (best rank #6), mostly in Bassoons, Saxophones, Oboes.
| Median price | $12.95 |
|---|---|
| Price range (middle 50%) | $8.99 – $12.95 |
| Median reviews | 24 |
| Total reviews | 1,917 |
| New books (30 days) | 0 |
| Breakout books (30 days) | 0 |
What stands out
- 69% of the catalog made a best-seller list in the last 30 days: the whole backlist sells, not one hit.
KJOS's best-ranked books
-
W62BN - Tradition of Excellence Book 2 - Bassoon
by KJOS
- Price$12.95
- Rating4.8
- Reviews14
-
W64TP - Tradition of Excellence Technique & Musicianship - Bb Trumpet/Cornet
by KJOS
- Price$6.45
- Rating4.8
- Reviews30
-
115VN - String Basics: Steps to Success for String Orchestra Violin Book 1
by KJOS
- Price$14.99
- Rating4.6
- Reviews994
-
W61OB - Tradition of Excellence Book 1 - Oboe
by KJOS
- Price$12.95
- Rating4.7
- Reviews62
-
W61BN - Tradition of Excellence Book 1 Bassoon
by KJOS
- Price$12.95
- Rating4.6
- Reviews23
-
W62OB - Tradition of Excellence Book 2 - Oboe
by KJOS
- Price$12.95
- Rating4.9
- Reviews24
-
W64TB - Tradition of Excellence Technique & Musicianship - Trombone
by KJOS
- Price$8.99
- Rating4.7
- Reviews24
-
W64HF - Tradition of Excellence Technique & Musicianship - F Horn
by KJOS
- Price$8.99
- Rating4.8
- Reviews11
-
W62BSG - Tradition of Excellence Book 2 - Tuba T.C.
by KJOS
- Price$12.95
- Reviews-
-
W64BN - Tradition of Excellence Technique & Musicianship - Bassoon
by KJOS
- Price$8.99
- Rating5.0
- Reviews3
Main categories
FAQ
How many books does KJOS have on Amazon?
KDPTop tracks 26 of their books; 18 made an Amazon list in the last 30 days.
Which categories does KJOS publish in?
Their books chart most often in Bassoons, Saxophones, Oboes.
How does KJOS price their books?
The median price is $12.95; half of the books cost $8.99–$12.95.
Has KJOS released new books recently?
0 new books 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.