KDP categories · Top KDP authors
Caries: Amazon KDP category data
Amazon Books Best Sellers data for Caries, updated Nov 2, 2026: median price $31.21, median 8 reviews, average rating 4.6 and a KDPTop opportunity score of 25/100 (highly competitive).
| Price range (middle 50%) | $12.33 – $115 |
|---|---|
| Average rating | 4.6 |
| New releases (90 days) | 7% |
| Books on the list | 100 |
| Store | Books |
What stands out
- Its median reviews are 14% of the parent category Dentistry (55), one of the easier corners under it.
- Its review barrier is lower than in 85% of Books categories: the median best seller has only 8 reviews, so new books can chart with few.
- At $31.21 its median price beats 90% of Books categories, leaving more margin per copy.
Top 10 Caries best sellers
-
Kiss Your Dentist Goodbye: A Do-It-Yourself Mouth Care System for Healthy, Clean Gums and Teeth
by Ellie Phillips DDS
- List rank#1
- Price$11.18
- Rating4.7
- Reviews398
-
Dental Radiography: Principles and Techniques
by Joen Iannucci DDS MS
- List rank#2
- Price$62.87
- Rating4.7
- Reviews190
-
Modern Dental Assisting
by Doni L. Bird CDA RDA RDH MA
- List rank#3
- Price$200
- Rating4.8
- Reviews724
-
If The Dentist Were An Animal (The Smile Series)
by Rachel Grider RDH
- List rank#4
- Price$11.99
- Rating4.3
- Reviews367
-
Cure Tooth Decay: Heal and Prevent Cavities with Nutrition, 2nd Edition
by Ramiel Nagel
- List rank#5
- Price$29.97
- Rating4.5
- Reviews1,988
-
More Chocolate, No Cavities: How Diet Can Keep Your Kid Cavity-Free
by Dr. Roger W. Lucas DDS
- List rank#6
- Price$19.99
- Rating4.8
- Reviews78
-
ALDARA (IMIQUIMOD) USAGE GUIDE: A Practical Handbook for Safe and Effective Treatment of Skin Conditions
by Martins Joel
- List rank#7
- Price$12.99
- Rating2.8
- Reviews7
-
Darby & Walsh Dental Hygiene: Theory and Practice
by Jennifer A Pieren RDH BSAS MS
- List rank#8
- Price$97.90
- Rating4.9
- Reviews31
-
Kiss Your Dentist Goodbye: A Do-It-Yourself Mouth Care System for Healthy, Clean Gums and Teeth
by Ellie Phillips DDS
- List rank#9
- Price$31.49
- Rating4.5
- Reviews926
-
White and Pharoah's Oral Radiology: Principles and Interpretation
by Sanjay Mallya BDS MDS PhD Dip ABOMR
- List rank#10
- Price$98.99
- Rating4.7
- Reviews45
FAQ
Is Caries a good niche for Amazon KDP?
Its KDPTop opportunity score is 25/100, which makes it highly competitive. The median best seller has 8 reviews and sells for $31.21.
How many reviews do you need to rank in Caries?
The median best seller has 8 reviews, and 90% of them have fewer than 100.
What do Caries best sellers cost?
The median price is $31.21; half of the best sellers are priced between $12.33 and $115.
Can new books break into Caries?
7% of the current best sellers were released in the last 90 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.