KDP categories · Top KDP authors
Reference (Transportation, Kindle eBooks): Amazon KDP category data
Amazon Kindle eBooks Best Sellers data for Reference (Transportation, Kindle eBooks), updated Nov 3, 2026: median price $9.99, median 1 reviews, average rating 4.5 and a KDPTop opportunity score of 25/100 (highly competitive).
| Price range (middle 50%) | $6.99 – $11.99 |
|---|---|
| Average rating | 4.5 |
| New releases (90 days) | 36% |
| Books on the list | 100 |
| Store | Kindle eBooks |
What stands out
- Its median reviews are 0% of the parent category Transportation (394), one of the easier corners under it.
- Its review barrier is lower than in 98% of Kindle eBooks categories: the median best seller has only 1 reviews, so new books can chart with few.
- 36% of its best sellers came out in the last 90 days, more than in 97% of Kindle eBooks categories: readers here keep buying new titles.
Top 10 Reference best sellers
-
PE Civil Transportation Exam Prep: The Most Complete Study Guide with Practice Problems, Detailed Solutions, In-Depth Reviews & Full Exams to Get Ready in No Time and Pass with Confidence
by Learnova
- List rank#1
- Price$53.32
- Rating4.0
- Reviews42
-
Toyota Tacoma 2016 – 2023 Detailed DIY Repair & Service Manual: The Definitive Step-by-Step Guide to Routine Maintenance, Advanced Diagnostics, and Total Overhauls—Comprehensive Coverage for Every SR
- List rank#2
- Price$11.99
- Reviews-
-
Why Are Airplane Windows Round?: The Hidden Engineering of Cabin Pressure, Aircraft Windows, and Flight Safety
by Theo Brainard
- List rank#3
- Price$1.99
- Reviews-
-
GOLF CART Detailed DIY Repair & Service Manual: The Definitive Step-by-Step Guide to Routine Maintenance, Electrical Diagnostics, and Total Overhauls—Comprehensive Worldwide Coverage for Every Club
- List rank#4
- Price$10.99
- Rating5.0
- Reviews1
-
HONDA ACCORD 2013-2017 REPAIR AND SERVICE MANUAL: The Complete Illustrated Step-by-Step Guide to Dealership-Level Diagnostics, Routine Maintenance, and Advanced DIY Repairs for All 2.4L I4, 3.5L V6
- List rank#5
- Price$11.99
- Reviews-
-
Navigation Rules and Regulations Handbook: PUBLICATION DATE 2024
by Department of Homeland Security
- List rank#6
- Price$9.99
- Rating4.8
- Reviews1,354
-
TESLA MODEL Y USER GUIDE: A PRATICAL STEP BY STEP MANUAL WALKTHROUGH
by WESS CONNOR
- List rank#7
- Price$12
- Reviews-
-
Chevrolet Equinox 2005–2026 Detailed DIY Repair & Service Manual: The Definitive Step-by-Step Guide to Routine Maintenance, Advanced Diagnostics, and Total Overhauls—Comprehensive Coverage for Every
- List rank#8
- Price$10.99
- Reviews-
-
Getting Started in Trade Compliance
by Ralph Müller
- List rank#9
- Price$9.99
- Rating4.0
- Reviews1
-
Mercury MerCruiser Service Manual Number 14: Sterndrive Units Alpha One
by Mercury Marine
- List rank#10
- Price$19.95
- Rating5.0
- Reviews2
Same niche in Books: Reference
FAQ
Is Reference a good niche for Amazon KDP?
Its KDPTop opportunity score is 25/100, which makes it highly competitive. The median best seller has 1 reviews and sells for $9.99.
How many reviews do you need to rank in Reference?
The median best seller has 1 reviews, and 90% of them have fewer than 100.
What do Reference best sellers cost?
The median price is $9.99; half of the best sellers are priced between $6.99 and $11.99.
Can new books break into Reference?
36% 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.