- KDSPY: $79 one-off, 60-day money-back guarantee, works in Chrome, Firefox, Edge, Opera and Brave.
- KDSPY lists 12 or 13 Amazon stores, including India, Japan, Mexico and Brazil.
- Bulk Publishing Books: $169 a month, 8 stores, research plus manuscript, cover, files and metadata.
- Bulk Publishing Books adds an Amazon Ads keyword generator, which KDSPY does not list.
Side by side
Green ticks are things you get. Bulk Publishing Books ticks 20 of 20 rows; KDSPY ticks 8.
| Feature | Bulk Publishing Books |  KDSPY |
|---|---|---|
| Cost per finished book | About $21 (8 books for $169) | No book included |
| Writes the full manuscript | In your saved Persona voice | ChatGPT prompt reports |
| Book types | Non-fiction, fiction, workbooks, journals, planners, puzzle, activity and children's | No |
| Editorial pass before you publish | Flags factual risk, repetition, voice drift, AI tells, reading level, KDP guidelines | No |
| Cover designer | Three directions, editable layers, full-wrap PDF with spine sized to page count | No |
| Print-ready interior PDF | KDP trim sizes, bleed and gutter margins set for you | No |
| EPUB 3 eBook file | Yes | No |
| KDP listing checked against KDP rules | 7 keywords, 3 categories, description HTML, AI disclosure | No |
| Amazon Ads launch plan | Campaigns, bids, budgets and bulk sheet export | No |
| Reverse ASIN for Ads | Inside the Ads builder (US) | No |
| Tracking after launch | Daily BSR, reviews, keyword ranks and alerts | 30-day rank tracking |
| Launch checklist and series ideas | Yes | No |
| AI included, no API keys | Yes | No |
| Price | $169/month, 8 books included | $79 one-off |
| Trial or guarantee | 7-day card trial, no refunds | 60-day money-back |
| Where it runs | Browser app | Browser extension on Amazon pages |
| Amazon marketplaces | 8 | 12 to 13 |
| Keyword and category analysis | Yes | Yes |
| Sales needed to reach a rank | Yes | Yes |
| Amazon Ads keywords | Yes | Not listed |
Competitor facts from their public pages, as of October 2026. Prices change; check before you buy.
What you get with KDSPY
KDSPY as it looks today, and what it actually gives you, as of October 2026.
- Writes the full manuscript: ChatGPT prompt reports
- Tracking after launch: 30-day rank tracking
- Price: $79 one-off
- Trial or guarantee: 60-day money-back
- Where it runs: Browser extension on Amazon pages
- Amazon marketplaces: 12 to 13
- Keyword and category analysis
- Sales needed to reach a rank
What you get with Bulk Publishing Books
Research tells you what to write. Bulk Publishing Books then writes it, edits it, designs the cover, formats the files and fills in your KDP listing. You upload and press publish.
Research that feeds the book
The keywords, categories and competitor gaps you pick are handed to the blueprint. You do not copy findings into a separate writing tool.
A Persona writes it
Each book is written in a saved Persona voice, then an editorial pass flags factual risk, repetition, voice drift and AI tells before you approve.
Formatted and covered
You get an interior PDF at a KDP trim size, an EPUB 3 file and a full-wrap cover PDF from one of three cover directions.
Metadata in KDP order
Title, description, 7 keyword slots, 3 categories and the AI disclosure are laid out in the order KDP asks for them, each with a copy button.
Tracked after launch
Published books get daily BSR, price, review and keyword rank snapshots, a launch checklist and series suggestions.
Your first book is on us for 7 days
Research, manuscript, cover and listing. Keep it even if you cancel.
Which should you pick?
Ads and launch
Ready-made Ads campaigns and daily keyword rank tracking.
A finished book
Bulk Publishing Books writes, edits, formats and covers it.
Price and guarantee
$79 once with 60 days to change your mind.
More stores
KDSPY reaches India, Japan, Mexico, Brazil and Poland.
In-page checks
Data appears on Amazon pages as you browse.
FAQ
Is KDSPY a one-off payment?
Yes. As of October 2026 it is $79 once, with updates included and a 60-day money-back guarantee.
How many marketplaces does KDSPY support?
Its homepage says 12 and lists 13, with Poland marked as just added.
How much does Bulk Publishing Books cost?
Bulk Publishing Books is $169 a month and includes 8 complete books (Chains) a month, unlimited research and unlimited Personas. A Chain counts when you approve its blueprint.
Is there a free trial or a refund?
There is a 7-day trial that needs a card through Stripe. Cancel before day 7 and you are not charged. During the trial research covers a set of starter keywords and categories. We do not offer refunds after billing starts, because every book uses real AI compute.
Do I need my own AI keys?
No. AI usage is included in the plan.
Does Bulk Publishing Books upload to KDP for me?
No. Amazon does not offer a public upload API for KDP, so you upload the files and paste the metadata yourself. Bulk Publishing Books gives you every file and field in the order KDP asks for them.
How we checked
We read each vendor's public pricing and feature pages on 6 October 2026 and only list what they state. Bulk Publishing Books is our product, so weigh that; we say where a rival is the better pick.
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