KDP categories · Top KDP authors
NIKKI JACOBS: Amazon KDP author data
As of Nov 6, 2026, NIKKI JACOBS has 13 books on Amazon, 10 of them on a best-seller list in the last 30 days (best rank #1), mostly in Orthodontics, Dental Materials, Geomorphology.
| Median price | $30.99 |
|---|---|
| Price range (middle 50%) | $30.49 – $33.89 |
| Median reviews | 2 |
| Total reviews | 6 |
| New books (30 days) | 0 |
| Breakout books (30 days) | 0 |
What stands out
- 77% of the catalog made a best-seller list in the last 30 days: the whole backlist sells, not one hit.
- Median price $30.99, 65% below the median of their main category, Orthodontics.
NIKKI JACOBS's best-ranked books
-
INBDE 2025-2026 Integrated National Board Dental Examination STUDY GUIDE
by NIKKI JACOBS
- Price$20
- Rating5.0
- Reviews2
-
GRE® Psychology Subject Test Prep 2025-2026: High-Yield Review, 500 Plus Practice Questions & Full Answer Explanations, Test-Taking Strategies
by NIKKI JACOBS
- Price$30.99
- Rating5.0
- Reviews1
-
INBDE 2025-2026 Integrated National Board Dental Examination STUDY GUIDE
by NIKKI JACOBS
- Price$37.99
- Rating5.0
- Reviews2
-
ASBOG Exam Study Guide 2025–2026: Geology exam prep with In-Depth Content Review, Practice Exams, and Field Application Tips
by NIKKI JACOBS
- Price-
- Rating2.0
- Reviews1
-
California RDA Study Guide 2025-2026: Comprehensive Study Guide with Practice Questions, California Law & Ethics, and PSI Exam Tips (2025–2026)
by NIKKI JACOBS
- Price$30.99
- Reviews-
-
ASBOG Exam Study Guide 2025-2026: Ace the geology Licensure exams with in-depth content review, field applications, strategic test-taking tips, and practice exams with detailed solutions.
by NIKKI JACOBS
- Price-
- Reviews-
-
TExES Physical Education EC–12 (258) Study Guide 2025–2026: 500+ Practice Questions, Full Explanations, TEKS-Aligned Competency Review, Timed Practice Tests
by NIKKI JACOBS
- Price$32.52
- Reviews-
-
Praxis® 5331 Study Guide 2025–2026: Unofficial Speech-Language Pathology Exam Prep with 500 Plus Practice Questions, Detailed Answer Explanations, and Test-Taking Strategies
by NIKKI JACOBS
- Price$30.99
- Reviews-
-
Medical Laboratory Science (MLS) Certification Study Guide 2025-2026: “300+ Practice Questions, Clinical Scenarios, and Thorough Preparation for the ... Laboratory Scientist Certification Exam”
by NIKKI JACOBS
- Price$28.99
- Reviews-
-
TCTCN Certification Exam Question Bank: 2026–2027 Edition: Advanced Clinical Judgment and High-Level Practice for Transplantation and Cellular Therapy Nurses
by NIKKI JACOBS
- Price$47.72
- Reviews-
Main categories
FAQ
How many books does NIKKI JACOBS have on Amazon?
KDPTop tracks 13 of their books; 10 made an Amazon list in the last 30 days.
Which categories does NIKKI JACOBS publish in?
Their books chart most often in Orthodontics, Dental Materials, Geomorphology.
How does NIKKI JACOBS price their books?
The median price is $30.99; half of the books cost $30.49–$33.89.
Has NIKKI JACOBS 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.