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Adrian Testley: Amazon KDP author data
Adrian Testley has 44 books on Amazon, 25 of them on a best-seller list in the last 30 days (best rank #6), mostly in Administration & Management, Health Care Delivery, Health Care Administration.
44Books on Amazon
25Listed in 30 days
3.5Average rating
| Median price | $38.69 |
|---|---|
| Price range (middle 50%) | $37.99 – $40.42 |
| Median reviews | 1 |
| Total reviews | 7 |
| New books (30 days) | 16 |
| Breakout books (30 days) | 6 |
What stands out
- 57% of the catalog made a best-seller list in the last 30 days: the whole backlist sells, not one hit.
- 16 new books in the last 30 days, 6 of them broke into a Best Sellers list.
Adrian Testley's best-ranked books
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USCG CAPTAIN’S LICENSE STUDY GUIDE 2026-2027: Six-Pack & OUPV Credential Prep: 1,000+ Practice Questions, 10 Full-Length Practice Tests, Weather, Navigation Rules, and Seamanship Fundamentals
by Adrian Testley
- Price$37.99
- Reviews-
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COMPLETE SH (ASCP) EXAM PREPARATION 2026-2027: A Certification Study Guide with 600+ Practice Questions, 6 Full-Length Practice Tests, and Detailed ... the Hematology Specialist Board Credential
by Adrian Testley
- Price$36.45
- Reviews-
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RCFE ADMINISTRATOR EXAM PREP 2026-2027: 1,500+ Exam-Style Questions, 15 Practice Tests & a Proven 8-Week Roadmap for Serious California Residential Care Administrator Certification Candidates
by Adrian Testley
- Price$39.99
- Reviews-
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NATA BOC INTENSIVE STUDY GUIDE 2026-2027: 1,000+ Practice Questions, 10 Full-Length Exams & Comprehensive Coverage of Athletic Training Domains — ... Intervention & Professional Responsibilities
by Adrian Testley
- Price$37.99
- Reviews-
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COMPLETE TCTCN (ONCC) EXAM QUESTION BANK 2026-2027: 800+ Practice Questions and 8 Full-Length Tests | Covering HSCT, Cellular Therapy, Post-Transplant Complications, CRS, Neurotoxicity, GVHD, and Professional Nursing Standards for Certification Readiness
by Adrian Testley
- Price$37.74
- Reviews-
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COMPLETE C-NNIC (NCC) EXAM QUESTION BANK 2026-2027: 600+ Practice Questions & 6 Full-Length Exams | The Independent Study Guide Every Neonatal ... Certification Candidate Needs Before Exam Day
by Adrian Testley
- Price$41.19
- Reviews-
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COMPLETE SBB (ASCP) STUDY GUIDE 2026-2027: 800+ High-Yield Practice Questions and 8 Full-Length Practice Tests with Answer Rationales for Specialist ... Board Certification for Exam Readiness
by Adrian Testley
- Price$37.28
- Reviews-
- Published2026-06
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NHA CEHRS STUDY GUIDE 2026–2027: 800+ Realistic Questions, 8 Timed Practice Tests, and Complete Review for Health Information Professionals for Aspiring EHR Specialists
by Adrian Testley
- Price$34.99
- Reviews-
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NPD-BC (ANCC) EXAM QUESTION BANK 2026-2027: Sharpen Your Skills with 800+ Practice Questions and 8 Full-Length Practice Tests Covering All ... Professional Development Certification
by Adrian Testley
- Price$38.71
- Reviews-
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CERTIFIED MEDICAL INTERPRETER EXAM PREP 2026-2027: Master Core Concepts with 1,500+ Practice Questions, 15 Complete Practice Tests, and Easy-to-Follow Study Support for Readiness
by Adrian Testley
- Price$37.99
- Rating5.0
- Reviews1
Main categories
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.