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J Cook: Amazon KDP author data
J Cook has 100 books on Amazon, 77 of them on a best-seller list in the last 30 days (best rank #1), mostly in Generative AI, Programming, Testing.
100Books on Amazon
77Listed in 30 days
4.2Average rating
| Median price | $12.99 |
|---|---|
| Price range (middle 50%) | $12.99 – $12.99 |
| Median reviews | 2 |
| Total reviews | 54 |
| New books (30 days) | 38 |
| Breakout books (30 days) | 27 |
What stands out
- 77% of the catalog made a best-seller list in the last 30 days: the whole backlist sells, not one hit.
- Median price $12.99, 36% below the median of their main category, Generative AI.
- 38 new books in the last 30 days, 27 of them broke into a Best Sellers list.
J Cook's best-ranked books
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Stop AI Slop: Get Clear, Useful Writing from Claude and ChatGPT with 100 Before-and-After Examples (AI Memory Playbooks Book 4)
by J Cook
- Price$12.99
- Reviews-
- Published2026-10
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Ship While You Sleep - 5 Claude Code Agents in 30 Days: Build the Overnight Fleet with Agents That Resume After a Crash, Never Collide and Hand You Finished Work by Morning. (The Overnight AI Team)
by J Cook
- Price$21.99
- Reviews-
-
Claude Skills - The Paid Work Playbook: Build a Client-Ready Claude Skills System in 30 Days (Claude Code Skills That Pay)
by J Cook
- Price$21.99
- Reviews-
-
Ship While You Sleep - 5 Claude Code Agents in 30 Days: Build the Overnight Fleet with Agents That Resume After a Crash, Never Collide and Hand You ... by Morning. (The Overnight AI Team Book 1)
by J Cook
- Price$12.99
- Reviews-
-
Claude Code + Obsidian The AI Second Brain Playbook: Build Your AI's Long Term Memory in a Weekend (AI Memory Playbooks Book 1)
by J Cook
- Price$12.99
- Rating4.4
- Reviews5
-
The AI Trading Agent Alpha Swarm Team: Deploy a 5-Agent Stock Trading Team This Weekend (AI Trading Bot Series Book 3)
by J Cook
- Price$12.99
- Reviews-
-
Vibe Coding: How Non-Coders Are Building $10K/Month Apps in a Weekend
by J Cook
- Price$9.99
- Reviews-
-
Files Over Prompts: Build HTML Artifacts and LLM Wikis Your Claude Agent Actually Reads (AI Memory Playbooks Book 3)
by J Cook
- Price$12.99
- Reviews-
-
Claude Code Multiplayer: Build One Shared Workspace for Your Team and Agents in 30 Days (Claude Code: Your Multi-Agent Dev Team Book 3)
by J Cook
- Price$12.99
- Reviews-
-
Claude Code + Obsidian The AI Second Brain Playbook: Build Your AI's Long Term Memory in a Weekend
by J Cook
- Price$12.99
- Rating4.4
- Reviews5
Main categories
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.