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Gary M Martinez: Amazon KDP author data
As of Nov 6, 2026, Gary M Martinez has 8 books on Amazon, 4 of them on a best-seller list in the last 30 days (best rank #47), mostly in Vitamins, Vitamins & Supplements, Nutrition.
| Median price | $10.99 |
|---|---|
| Price range (middle 50%) | $6.49 – $14.24 |
| Median reviews | 1 |
| Total reviews | 1 |
| New books (30 days) | 4 |
| Breakout books (30 days) | 2 |
What stands out
- 50% of the catalog made a best-seller list in the last 30 days: the whole backlist sells, not one hit.
- Median price $10.99, 57% above the median of their main category, Vitamins.
- 4 new books in the last 30 days, 2 of them broke into a Best Sellers list.
Gary M Martinez's best-ranked books
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Berberine: The Evidence-Based Guide to Blood Sugar, Cholesterol, and the Metformin Question — What 50 Clinical Trials (and the Absorption Problem) Actually ... Evidence Based Supplement Guides Book 3)
by Gary M Martinez
- Price$4.99
- Reviews-
- Published2026-10
-
The MSM Guide: What the Research Actually Shows for Joint Pain — Dosage, Timing, and Realistic Expectations for Methylsulfonylmethane (The Evidence Based Supplement Guides Book 1)
by Gary M Martinez
- Price$6.99
- Reviews-
- Published2026-08
-
Collagen: The Evidence-Based Guide to Skin, Joints, and Aging Well — What a Landmark Review of 113 Clinical Trials Reveals About Dosage, Types, and ... ... Evidence Based Supplement Guides Book 2)
by Gary M Martinez
- Price$4.99
- Rating5.0
- Reviews1
-
The Smart Meal Prep Planner for Weight Loss: Weekly Tracking, Shopping Lists & Recipe Ideas
by Gary M Martinez
- Price$12.99
- Reviews-
- Published2026-06
-
What Can I Eat With Kidney Disease?: A Large-Print, Lab-Based Grocery Guide for Seniors with CKD Stages 3-4: Food Lists, Label Decoder, and Shopping Lists
by Gary M Martinez
- Price$12.99
- Reviews-
- Published2026-10
-
The Blended Family Estate Planning Guide: Strategies for Second Marriages, Stepchildren, and the Families You Choose
by Gary M Martinez
- Price$19.99
- Reviews-
-
The ADHD Execution Gap: A Practical Workbook for Closing the Gap Between Knowing What to Do and Actually Doing It
by Gary M Martinez
- Price$17.99
- Reviews-
- Published2026-08
-
My K-Pop Bias Journal: A Fan's Notebook for Tracking Your Favorite Idols
by Gary M Martinez
- Price$8.99
- Reviews-
- Published2026-07
Main categories
FAQ
How many books does Gary M Martinez have on Amazon?
KDPTop tracks 8 of their books; 4 made an Amazon list in the last 30 days.
Which categories does Gary M Martinez publish in?
Their books chart most often in Vitamins, Vitamins & Supplements, Nutrition.
How does Gary M Martinez price their books?
The median price is $10.99; half of the books cost $6.49–$14.24.
Has Gary M Martinez released new books recently?
4 new books in the last 30 days, 2 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.