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James Lock: Amazon KDP author data
As of Nov 6, 2026, James Lock has 10 books on Amazon, 8 of them on a best-seller list in the last 30 days (best rank #3), mostly in Psychiatric, Psychiatry & Mental Health, Child.
| Median price | $33.95 |
|---|---|
| Price range (middle 50%) | $17.40 – $39.23 |
| Median reviews | 10 |
| Total reviews | 1,421 |
| New books (30 days) | 0 |
| Breakout books (30 days) | 0 |
What stands out
- 80% of the catalog made a best-seller list in the last 30 days: the whole backlist sells, not one hit.
- Median price $33.95, 18% below the median of their main category, Psychiatric.
James Lock's best-ranked books
-
Treatment Manual for Anorexia Nervosa: A Family-Based Approach
by James Lock
- Price$40
- Rating5.0
- Reviews4
- Published2025-11
-
Treatment Manual for Anorexia Nervosa: A Family-Based Approach
by James Lock
- Price$31.20
- Rating5.0
- Reviews4
-
Help Your Teenager Beat an Eating Disorder
by James Lock
- Price$15.06
- Rating4.5
- Reviews423
- Published2015-01
-
Treatment Manual for Anorexia Nervosa: A Family-Based Approach
by James Lock
- Price$38.98
- Rating4.7
- Reviews11
- Published2002-08
-
Help Your Teenager Beat an Eating Disorder, Second Edition
by James Lock
- Price$17.59
- Rating4.5
- Reviews423
-
Help Your Teenager Beat an Eating Disorder
by James Lock
- Price$16.82
- Rating4.5
- Reviews9
-
Treatment Manual for Anorexia Nervosa, Second Edition: A Family-Based Approach
by James Lock
- Price$36.69
- Rating4.5
- Reviews110
-
Adolescent-Focused Therapy for Anorexia Nervosa: A Developmental Approach
by James Lock
- Price$43
- Rating4.7
- Reviews10
-
Help Your Teenager Beat an Eating Disorder
by James Lock
- Price-
- Rating4.5
- Reviews423
- Published2015-01
-
Treatment Manual for Anorexia Nervosa: A Family-Based Approach
by James Lock
- Price-
- Rating5.0
- Reviews4
- Published2025-12
Main categories
FAQ
How many books does James Lock have on Amazon?
KDPTop tracks 10 of their books; 8 made an Amazon list in the last 30 days.
Which categories does James Lock publish in?
Their books chart most often in Psychiatric, Psychiatry & Mental Health, Child.
How does James Lock price their books?
The median price is $33.95; half of the books cost $17.40–$39.23.
Has James Lock 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.