Existing businessConsumer

Resale-Deal-Alerts-style copycat

A French stealth startup sells EUR 79 to EUR 299 per month real-time deal alerts to second-hand resellers; TrustMRR (Stripe-verified) shows $14,460 MRR and 101 active subscriptions 73 days after its 2026-08-15 founding, and it was listed for sale on 2026-10-26.

2 weeks ago · Scored 27 Oct 2026 · ID HBV-261027-H02

Working title: Resale-Deal-Alerts-style copycat for Brazil and Mexico (working name)

Summary

BriefingVerifiedSelf-reported

A French stealth startup (founded 2026-08-15) sends resellers new marketplace listings within seconds for saved filters (brand, price, condition), converts prices to EUR and offers one-click buying; subscriptions run EUR 79 to EUR 299 per month. TrustMRR (Verified) shows $13,515 revenue in the last 30 days (-4.8%), $34…

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,241 all-time, $14,460 MRR (+3.9% in 30 days), 101 active subscriptions (about $143 each) and an 85% margin (profile, Self-reported). Age is 73 days. It runs on one server, the founder handles support, and growth came from Instagram, TikTok, YouTube, Discord and an affiliate/referral program. Caution: it was listed for sale on 2026-10-26 at $399,000 (2.5x revenue); listed is not sold, but check it before copying. Growth has flattened in the last 30 days. HBV angle: alerts for Brazilian and Mexican resellers (OLX, Mercado Livre, Enjoei, Facebook Marketplace) using official feeds or user-supplied saved searches. The category has many sniper tools and marketplace terms are a real risk.

Description

Original: resellers define filters, the service pings them with new listings in seconds, with price conversion and one-click buy links. HBV version: PT-BR/ES alert service for Brazilian and Mexican resellers and bargain hunters: saved searches on public listing pages and feeds, push/WhatsApp alerts, margin hints from sold-price data; monthly plans priced for LatAm; referral program and Discord community.…

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Must respect marketplace terms: no credential sharing, no automated purchases. Global Application: real-time deal alerts for resellers on any second-hand marketplace (Vinted, eBay, Kleinanzeigen, OLX). LatAm Version: Brazil (OLX, Mercado Livre, Enjoei, Facebook Marketplace) and Mexico (Mercado Libre, Facebook Marketplace), Pix/OXXO billing, WhatsApp alerts.

Target customer

Part-time and full-time second-hand resellers in Brazil and Mexico

Pain

Good deals are gone within minutes; manual searching is slow

Why this score

Why it scored lower: Marketplace terms and data access

MoatHypothesis

Local marketplaces + community. Coverage of LatAm marketplaces, WhatsApp alerts and a reseller Discord. Tech is simple; moat is data path, speed and community. Hypothesis.

Demand signals

X posts (7 days)

n/a

Signal trend

n/a

Web demandVerified

Stealth startup $14.5K MRR, 101 subscriptions (Verified, TrustMRR); listed for sale 2026-10-26.

Market and competitors

TAMHypothesisEstimate

$5B+ (Hypothesis) — Global tools for second-hand resellers and bargain hunters. Method: Order-of-magnitude hypothesis, not a sourced report. Sources: Hark estimate (Hypothesis).

SAMHypothesisEstimate

$60M (Hypothesis) — Brazilian and Mexican resellers paying for alerts. Method: ~500K active resellers x ~2% paying x ~$30/month x 12 ≈ $3.6M near term; $60M ceiling. Sources: Hark estimate (Hypothesis).

SOMVerifiedHypothesisEstimate

$120K ARR (Hypothesis) — 12 months, three categories in Brazil. Method: ~400 payers x ~$25/month x 12 ≈ $120K; the original's run-rate is ~$174K ARR (MRR x 12, Verified input). Sources: Hark estimate (Hypothesis).

Competitors

Vinted/eBay sniper bots, marketplace native saved searches, Telegram deal channels

Existing business

https://trustmrr.com/startup/hidden-business-86

Business model

Monetization

Monthly subscription with web paywall; referral commissions; later sponsor slots

Revenue hypothesis (monthly)VerifiedHypothesis

Base ~$8K/month, conservative ~$1.5K/month at 12 months (Hypothesis). Benchmark: original $14.5K MRR (Verified).

Traction and revenueVerified

Founded 2026-08-15 (73 days). $13,515 30-day revenue (-4.8%), $14,460 MRR, 101 active subscriptions, $34,241 all-time (TrustMRR, Verified); listed for sale 2026-10-26 at $399,000. X velocity n/a (hbv_scout to confirm).

Jobs to be done

When I want to find underpriced listings before other buyers, I want instant alerts for my saved searches with a margin hint, so I can buy low and resell quickly.

HXC

Diego · 31 · Guadalajara: Part-time reseller of sneakers and electronics on Facebook Marketplace and Mercado Libre. Frustration & buying signal: Loses good deals to faster buyers; would pay monthly for instant alerts with margin hints.

Build and go-to-market

Tech stack

Cursor + Vercel + GitHub cesarx2 (one repo); Supabase; Stripe

GTM channels

PT-BR/ES SEO/GEO pages by category, faceless TikTok/Instagram demos, Discord/WhatsApp community, affiliate program; no founder face, no paid ads

Risks

Main risk

Marketplace terms and data access

All risks

Value Risk: Attention — Resellers may keep using free saved-search alerts. Next: Fake-door on three categories. | Usability Risk: Supported — Reseller pain is acute and measurable. Next: Interview 10 resellers. | Feasibility Risk: Elevated — Marketplace terms and anti-bot defences can block data.…

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Next: Use official feeds or user-supplied pages only; legal read. | Viability Risk: Attention — Original is for sale and flat; churn unknown. Next: Treat as a weak benchmark until churn is seen.

Next validation step

Confirm compliant data path; 72h fake-door in Brazil

Sources

trustmrr.com https://trustmrr.com/startup/hidden-business-86.md https://trustmrr.com/

resale, alerts, subscription, b2c, copycat, existing, for-sale-listing, below-bar

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# Briefing: Resale-Deal-Alerts-style copycat for Brazil and Mexico (working name)

Source: Startup Ideas HQ (HB Ventures), found 2026-10-27. ProductBots Opportunity Score: 59/100, evidence confidence 45%.
Evidence labels (Verified, Self-reported, Hypothesis) are kept as written by the researcher.

## Goal for ProductBots.ai
Turn this idea into a validated MVP plan and a first build. Start from the next validation step; do not assume unlabelled numbers are verified.

## What it is
A French stealth startup sells EUR 79 to EUR 299 per month real-time deal alerts to second-hand resellers; TrustMRR (Stripe-verified) shows $14,460 MRR and 101 active subscriptions 73 days after its 2026-08-15 founding, and it was listed for sale on 2026-10-26.

A French stealth startup (founded 2026-08-15) sends resellers new marketplace listings within seconds for saved filters (brand, price, condition), converts prices to EUR and offers one-click buying; subscriptions run EUR 79 to EUR 299 per month. TrustMRR (Verified) shows $13,515 revenue in the last 30 days (-4.8%), $34,241 all-time, $14,460 MRR (+3.9% in 30 days), 101 active subscriptions (about $143 each) and an 85% margin (profile, Self-reported). Age is 73 days. It runs on one server, the founder handles support, and growth came from Instagram, TikTok, YouTube, Discord and an affiliate/referral program. Caution: it was listed for sale on 2026-10-26 at $399,000 (2.5x revenue); listed is not sold, but check it before copying. Growth has flattened in the last 30 days. HBV angle: alerts for Brazilian and Mexican resellers (OLX, Mercado Livre, Enjoei, Facebook Marketplace) using official feeds or user-supplied saved searches. The category has many sniper tools and marketplace terms are a real risk.

## Customer and pain
Target customer: Part-time and full-time second-hand resellers in Brazil and Mexico
Pain: Good deals are gone within minutes; manual searching is slow

## Market and competitors
TAM: $5B+ (Hypothesis) — Global tools for second-hand resellers and bargain hunters. Method: Order-of-magnitude hypothesis, not a sourced report. Sources: Hark estimate (Hypothesis).
SAM: $60M (Hypothesis) — Brazilian and Mexican resellers paying for alerts. Method: ~500K active resellers x ~2% paying x ~$30/month x 12 ≈ $3.6M near term; $60M ceiling. Sources: Hark estimate (Hypothesis).
SOM: $120K ARR (Hypothesis) — 12 months, three categories in Brazil. Method: ~400 payers x ~$25/month x 12 ≈ $120K; the original's run-rate is ~$174K ARR (MRR x 12, Verified input). Sources: Hark estimate (Hypothesis).
Competitors: Vinted/eBay sniper bots, marketplace native saved searches, Telegram deal channels
Geography: Brazil and Mexico first; global except China

## Business model
Monetization: Monthly subscription with web paywall; referral commissions; later sponsor slots
Revenue hypothesis (monthly): Base ~$8K/month, conservative ~$1.5K/month at 12 months (Hypothesis). Benchmark: original $14.5K MRR (Verified).

## Build and go-to-market
Build effort (agent-weeks): 3
Time to first revenue: 3-4 weeks
Tech stack: Cursor + Vercel + GitHub cesarx2 (one repo); Supabase; Stripe
GTM channels: PT-BR/ES SEO/GEO pages by category, faceless TikTok/Instagram demos, Discord/WhatsApp community, affiliate program; no founder face, no paid ads

## Risks and next step
Main risk: Marketplace terms and data access
Next validation action: Confirm compliant data path; 72h fake-door in Brazil

## Sources
https://trustmrr.com/startup/hidden-business-86 https://trustmrr.com/startup/hidden-business-86.md https://trustmrr.com/

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Research, not investment advice. Numbers keep the label they were published with.

Summary

Briefing✓Verified◐Self-reported

Description

Target customer

Pain

Why this score

Moat○Hypothesis

Demand signals

X posts (7 days)

Signal trend

Web demand✓Verified

Market and competitors

TAM○Hypothesis≈Estimate

SAM○Hypothesis≈Estimate

SOM✓Verified○Hypothesis≈Estimate

Competitors

Existing business

Business model

Monetization

Revenue hypothesis (monthly)✓Verified○Hypothesis

Traction and revenue✓Verified

Jobs to be done

HXC

Build and go-to-market

Tech stack

GTM channels

Risks

All risks

Next validation step

Sources

Related ideas

Ton-piston-style copycat for Brazil and Mexico

PhotoCraft-powered seller photo studio

Daycare Price Index

BriefingVerifiedSelf-reported

MoatHypothesis

Web demandVerified

TAMHypothesisEstimate

SAMHypothesisEstimate

SOMVerifiedHypothesisEstimate

Revenue hypothesis (monthly)VerifiedHypothesis

Traction and revenueVerified