KDP categories · Top KDP authors
Interpersonal Relations (Relationships, Books): Amazon KDP category data
Amazon Books Best Sellers data for Interpersonal Relations (Relationships, Books), updated Nov 3, 2026: median price $12.12, median 3,828 reviews, average rating 4.6 and a KDPTop opportunity score of 26/100 (highly competitive).
| Price range (middle 50%) | $10.13 – $14.35 |
|---|---|
| Average rating | 4.6 |
| New releases (90 days) | 5% |
| Books on the list | 100 |
| Store | Books |
What stands out
- Its review barrier is higher than in 96% of Books categories: the median best seller has 3,828 reviews, so new books need time to build up.
- At $12.12 its median price is below 80% of Books categories, so it is a volume game.
- Only 5% of its best sellers are under 90 days old, fewer than in 75% of Books categories: established titles hold the list.
Top 10 Interpersonal Relations best sellers
-
How to Win Friends & Influence People
- List rank#1
- Price$15.69
- Rating4.7
- Reviews101,798
-
Making Peace with What I Can’t Control: Find Relief from the Exhaustion of Overthinking, Trying to Fix Others, and Wanting to Figure It All Out
- List rank#2
- Price$19.98
- Rating4.8
- Reviews206
-
Adult Children of Emotionally Immature Parents: How to Heal from Distant, Rejecting, or Self-Involved Parents
- List rank#3
- Price$10.21
- Rating4.8
- Reviews28,580
-
Attached: The New Science of Adult Attachment and How It Can Help You Find--and Keep--Love
by Amir Levine
- List rank#4
- Price$9.01
- Rating4.7
- Reviews23,894
-
-
Why Am I Like This?: Break Your Relationship Patterns and Create the Life You Want
- List rank#6
- Price$17.29
- Rating4.6
- Reviews99
-
Codependent No More: How to Stop Controlling Others and Start Caring for Yourself (Revised and Updated)
- List rank#7
- Price$13.88
- Rating4.7
- Reviews19,295
-
The Art of Fighting: The Transformative Power of Conflict
by Priya Parker
- List rank#8
- Price$14.95
- Rating4.1
- Reviews43
-
The Art of Gathering: How We Meet and Why It Matters
by Priya Parker
- List rank#9
- Price$10.45
- Rating4.6
- Reviews3,822
-
Hold Me Tight: Seven Conversations for a Lifetime of Love (The Dr. Sue Johnson Collection, 1)
- List rank#10
- Price$14.04
- Rating4.6
- Reviews6,448
FAQ
Is Interpersonal Relations a good niche for Amazon KDP?
Its KDPTop opportunity score is 26/100, which makes it highly competitive. The median best seller has 3,828 reviews and sells for $12.12.
How many reviews do you need to rank in Interpersonal Relations?
The median best seller has 3,828 reviews, and 6% of them have fewer than 100.
What do Interpersonal Relations best sellers cost?
The median price is $12.12; half of the best sellers are priced between $10.13 and $14.35.
Can new books break into Interpersonal Relations?
5% 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.