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Helen Foster: Amazon KDP author data
As of Nov 6, 2026, Helen Foster has 2 books on Amazon, 2 of them on a best-seller list in the last 30 days (best rank #1), mostly in Other Diets, Nutrition, Diets & Weight Loss.
2Books on Amazon
2Listed in 30 days
4.0Average rating
| Median price | $8.99 |
|---|---|
| Price range (middle 50%) | $6.99 – $10.99 |
| Median reviews | 72 |
| Total reviews | 145 |
| New listings (30 days, incl. new editions) | 0 |
| Breakout books (30 days) | 0 |
What stands out
- Median price $8.99, 35% below the median of their main category, Other Diets.
Helen Foster's best-ranked books
-
The Macro Method: The science-backed approach to lasting weight loss
by Helen Foster
- Price$4.99
- Rating3.9
- Reviews74
-
The Macro Method: The science-backed approach to lasting weight loss
by Helen Foster
- Price$11.79
- Rating3.9
- Reviews74
Main categories
FAQ
How many books does Helen Foster have on Amazon?
KDPTop tracks 2 of their books; 2 made an Amazon list in the last 30 days.
Which categories does Helen Foster publish in?
Their books chart most often in Other Diets, Nutrition, Diets & Weight Loss.
How does Helen Foster price their books?
The median price is $8.99; half of the books cost $6.99–$10.99.
Has Helen Foster 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.