Books on Amazon that nobody found, so Andre built an AI agent to run the ads. It's still losing money, but less: $188 of royalties vs $363 of ads in Oct 1–24 (−$174), against $56 vs $402 over the same days in September (−$346) [1].
What does Valenbourg (Andre Vilar's AI-run book publishing house on Amazon KDP) sell, and to whom?
Self-published books on Amazon (KDP); an AI agent runs the Amazon ads, pricing and support escalations.
Amazon book buyers. Andre doesn't name the books; the next bottleneck he names is reviews: 3 versus competitors' 6,000 [2].
How was Valenbourg (Andre Vilar's AI-run book publishing house on Amazon KDP) built?
He published 4 books with no sales; the first sale came with book five, in month five. In April he set up ads by hand with Claude's help. In September he built an ads agent that screens 10,000+ keywords per book, flags wasted spend (it marked $89 of $687 as noise) and works within a $600/month budget and guardrails. He approves its decisions [1][2][5].
What is the business model?
KDP royalties on book sales, paid about 60 days after the sale. The agent repriced the books on Oct 3, which raised royalty per book by 36% [2].
Where does the traffic come from?
Amazon Ads only. About 3% of paid clicks buy, and it takes about $35 of clicks per paid sale. He killed one campaign running at 213% ACOS [2].
What revenue has Valenbourg (Andre Vilar's AI-run book publishing house on Amazon KDP) reported?
Reported revenue: $188 KDP royalties Oct 1–24, 2026 vs $363 ad spend (−$174); Sep 1–24: $56 vs $402 (−$346), per Andre Vilar on X: Sep vs Oct ads and royalties (Oct 24, 2026) (2026-10-24).
- 2026-03First royalties appear on the monthly chart [3]
- 2026-04Ads set up by hand with Claude; 15+ books sold in 20 days at about 2× the spend [5]
- 2026A price change freezes the ads for 6 weeks: $0 spent, 0 sold [4]
- 2026-09Agent gets an ad budget to test what to keep, fix or kill; month: $73 royalties vs $497 ads [2]
- 2026-10-03Agent reprices the books: +36% royalty per book [2]
- 2026-10-24Oct 1–24: $188 royalties vs $363 ads (−$174) [1]
What does the agent do, and what does the human do?
- Runs Amazon ad campaigns
- Screens keywords and cuts wasted spend
- Sets book prices
- Handles support escalations
- Builds the internal scoreboard (marked 'agent-generated, human-approved')
- Wrote and published the books
- Sets the $600/month budget and guardrails
- Approves the agent's decisions and pays the bills [2]
What does it cost to run?
Ad spend: $497 in September and $363 in Oct 1–24 [1][2]. Daily burn fell from $14.1 to $6.6 [2]. The AI model costs aren't disclosed.
What worked and what didn't?
- Losses roughly halved month on month
- Repricing lifted royalty per book by 36%
- Cutting a 213% ACOS campaign stopped the worst waste
- Every number is posted in public, from KDP and Amazon Ads screenshots
- Still losing money every month
- Only 3 reviews against competitors with thousands
- Only about 3% of paid clicks buy
- One price change froze ads for 6 weeks
How do you replicate Valenbourg (Andre Vilar's AI-run book publishing house on Amazon KDP)?
- Give an ads agent a hard monthly cap and require human approval
- Let it screen keywords at scale, then keep only the few that convert
- Test pricing before spending more on ads
- Remember royalties arrive about 60 days late when you read the numbers
What are the risks and the moat?
Paid ads can burn more than the books earn, and Amazon royalties lag about 60 days, so monthly figures can mislead. With few reviews, even good ads convert poorly.
FAQ
How much does the AI-run publishing house make?
$188 in KDP royalties in Oct 1–24, 2026, against $363 of ads, a net loss of $174 [1].
Is it getting better?
Yes. Over the same 24 days in September it made $56 against $402 of ads (−$346); full-month losses fell from $424 to $146 as of Oct 22 [1][2].
What does the AI agent do?
It runs the Amazon ads, pricing and support escalations; Andre approves the decisions [2].
What is holding it back?
Reviews: 3, against competitors' 6,000 [2].
Sources
- [1] Andre Vilar on X: Sep 1–24 vs Oct 1–24 ads and royalties (Oct 24, 2026)↗
- [2] Andre Vilar on X: Valenbourg Ops scoreboard, month 2 (Oct 23, 2026)↗
- [3] Andre Vilar on X: monthly royalties vs ad spend chart (Oct 24, 2026)↗
- [4] Andre Vilar on X: the backstory (Oct 22, 2026)↗
- [5] Andre Vilar on X: April, ads set up with Claude (Oct 23, 2026)↗
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