「Testing & Certification」KDP 类目数据
Amazon 纸书「Testing & Certification」类目的畅销榜数据(11月2日更新):中位价格 $21.79,评论中位数 25,平均评分 4.5,KDPTop 机会分 33/100(竞争很激烈)。
33机会分 / 100
$21.79中位价格
25评论中位数
| 价格区间(中间 50%) | $18.99 – $32.99 |
|---|---|
| 平均评分 | 4.5 |
| 近 90 天新书占比 | 12% |
| 榜单书数 | 100 |
| 所属分类 | 纸书 |
数据解读
- 评论门槛只有上级类目「Repair & Maintenance」的 11%(236 条),是它下面更好进的一块。
「Testing & Certification」畅销榜 Top 10
-
CDL Study Guide 2025-2026: Your All-in-One Course, 2000+ Practice Questions + Online Platform + Full-Length Exams for All Classes + Proven Strategies
作者 Learnik Press
- 榜单排名#1
- 价格$14.63
- 评分4.6
- 评论185
-
CDL Study Guide: Complete Review + Real DMV-Style Questions and Detailed Answer Explanations (Exam Simulator and E-Learning Access)
作者 Newstone TP
- 榜单排名#2
- 价格$19.99
- 评分4.8
- 评论192
-
Automotive Multimeter Techniques: Electrical Diagnosis Step by Step - Voltage Drop, Sensor Testing, and the 20 Measurements That Solve 90% of Faults (Automotive Diagnostics & Scan Tool Series)
- 榜单排名#3
- 价格$9.99
- 评分5.0
- 评论2
-
RV 12 Volt Electrical Troubleshooting Made Simple: Find Battery Drain, Blown Fuses, Converter Failures and Faulty Wiring with Easy Multimeter Tests, Visual Diagrams and DIY Repair Checklists
作者 Mason Whitaker
- 榜单排名#4
- 价格$10.08
- 评论-
-
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ASE A1-A9 Study Guide: The Ultimate All-in-One Test Prep to Ace the ASE Exams, Become a Master Technician, and Take Your Career to the Next Level
作者 Textora Publishing
- 榜单排名#6
- 价格$29.99
- 评分4.4
- 评论80
-
Florida Driver’s License Exam Prep: Everything You Need to Pass → Practice Questions Based on the Latest DMV Manual, Road Signs, Traffic Laws, Driving ... & Detailed Explanations of What to Expect!
- 榜单排名#7
- 价格$18.99
- 评分4.4
- 评论131
-
Georgia Driver’s License Exam Prep: 100 Practice Questions Based on the Latest DDS Manual, Detailed Answer Explanations, Road Signs, Traffic Laws, Top Tips for Passing the Road Skills Test, & More!
- 榜单排名#8
- 价格$18.99
- 评分4.8
- 评论33
-
New York Driver’s License Exam Prep: Everything You Need to Pass → Practice Test Based on the Latest DMV Manual, Road Signs, Traffic Laws, & Detailed Explanations of What to Expect!
- 榜单排名#9
- 价格$18.99
- 评分4.6
- 评论32
-
ASE Engine Repair Certification Test (A1)
作者 AudioLearn Content Team
- 榜单排名#10
- 价格$15.13
- 评分4.0
- 评论16
常见问题
「Testing & Certification」适合做 KDP 吗?
KDPTop 机会分 33/100,属于竞争很激烈。畅销榜中位数书有 25 条评论,中位价格 $21.79。
在「Testing & Certification」上榜需要多少评论?
畅销榜书的评论中位数是 25,78% 的书不到 100 条评论。
「Testing & Certification」的书定价多少合适?
中位价格 $21.79,一半的畅销书定价在 $18.99–$32.99 之间。
新书能进「Testing & Certification」畅销榜吗?
当前畅销榜里 12% 的书是近 90 天的新书。
数据说明
数据来自 KDPTop 每天对 Amazon 公开榜单页面的抓取,中位数基于最新一期畅销榜。机会分综合了评论门槛、低评论书占比、榜单更替、新书占比和价格,0–100 分,越高越容易进入。