KDP categories · Top KDP authors
Sonia Publishing: Amazon KDP author data
As of Nov 6, 2026, Sonia Publishing has 11 books on Amazon, 7 of them on a best-seller list in the last 30 days (best rank #4), mostly in Machinery, Industrial Technology, Allied Health Professions.
| Median price | $5.88 |
|---|---|
| Price range (middle 50%) | $2.99 – $22.99 |
| Median reviews | 3 |
| Total reviews | 31 |
| New books (30 days) | 7 |
| Breakout books (30 days) | 5 |
What stands out
- 64% of the catalog made a best-seller list in the last 30 days: the whole backlist sells, not one hit.
- Median price $5.88, 71% below the median of their main category, Machinery.
- 7 new books in the last 30 days, 5 of them broke into a Best Sellers list.
Sonia Publishing's best-ranked books
-
Respiratory Therapy Exam (RTE) Study Guide 2027–2028: NBRC Prep for the New CRT/RRT Exam with 4 Full-Length Practice Tests, Clinical Judgment Scenarios and Detailed Answer Explanations
by Sonia Publishing
- Price$2.99
- Rating4.8
- Reviews8
-
NYC MTA Conductor Exam Prep 2026-2027: Complete Study Guide for the New York City Transit Exam No. 6626 with 6 Complete Practice Tests, 1,500+ Practice Questions and Step-by-Step Answer Explanations
by Sonia Publishing
- Price$2.99
- Rating5.0
- Reviews2
-
NICET Fire Alarm Systems Study Guide 2026-2027: Levels I & II Exam Prep with 15 Full-Length Practice Tests, 1,750+ Questions and Detailed Answer Explanations
by Sonia Publishing
- Price$2.99
- Rating5.0
- Reviews3
-
Mastering Industrial Electrical Panels & Motor Control Wiring Schematics: Learn to Read PLC Systems, Ladder Diagrams, Control Circuits, Real Industrial Automation and Electrical Symbols
by Sonia Publishing
- Price$3.99
- Rating5.0
- Reviews3
-
Respiratory Therapy Exam (RTE) Study Guide 2027–2028: NBRC Prep for the New CRT/RRT Exam with 4 Full-Length Practice Tests, Clinical Judgment Scenarios and Detailed Answer Explanations
by Sonia Publishing
- Price$27.99
- Rating4.8
- Reviews8
- Published2026-10
-
Mastering Industrial Electrical Panels & Motor Control Wiring Schematics: Learn to Read PLC Systems, Ladder Diagrams, Control Circuits, Real Industrial Automation and Electrical Symbols
by Sonia Publishing
- Price$30.99
- Rating5.0
- Reviews3
-
NICET Fire Alarm Systems Study Guide 2026-2027 LEVELS III & IV: Exam Prep with 11 Full-Length Practice Tests, 1,500 Questions and Detailed Answer Explanations
by Sonia Publishing
- Price$2.99
- Rating5.0
- Reviews2
-
Menopause Certification Exam Study Guide 2027–2028: Complete MSCP Review with 6 Full-Length Practice Tests, 800 Questions and Detailed Answer Explanations
by Sonia Publishing
- Price$7.99
- Rating5.0
- Reviews1
-
Menopause Certification Exam Study Guide 2027–2028: Complete MSCP Review with 6 Full-Length Practice Tests, 800 Questions and Detailed Answer Explanations
by Sonia Publishing
- Price$37.99
- Rating5.0
- Reviews1
-
Italienisch Lernen Adventskalender: 24 Türchen bis Weihnachten und 6 Bonus-Türchen bis zur Befana – für Anfänger, mit Aussprachehilfe, Übungen mit Lösungen ... durch Italien (German Edition)
by Sonia Publishing
- Price$0
- Reviews-
Main categories
FAQ
How many books does Sonia Publishing have on Amazon?
KDPTop tracks 11 of their books; 7 made an Amazon list in the last 30 days.
Which categories does Sonia Publishing publish in?
Their books chart most often in Machinery, Industrial Technology, Allied Health Professions.
How does Sonia Publishing price their books?
The median price is $5.88; half of the books cost $2.99–$22.99.
Has Sonia Publishing released new books recently?
7 new books in the last 30 days, 5 of which reached a Best Sellers list.
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.