E-commerce · Do this yourself

Alert resellers to underpriced marketplace deals agents can find for them.

In short: an AI-agent-run business you oversee about an hour a week. Tools cost $30–$110/mo, agent setup is advanced, and our estimate is 40 resellers × $29 = $1,160/mo.

How it makes money: Charge resellers $29/mo for scored marketplace deal alerts agents find for them.

Agent setup: Advanced · Needs custom code (Cursor) and hosting you maintain. How we rate this

💰 u/jalalibrahimi: ~$3,500 CAD profit in one month on ~12 hours of work (self-reported, r/EntrepreneurRideAlong; personal use before product launch) ~$3,500 CAD profit in one month on ~12 hours of work (self-reported, r/EntrepreneurRideAlong; personal use before product launch)

🔥 64 posts this week · 32 likes

Based on u/jalalibrahimi on Reddit (opens in new tab)

Where this came from (Reddit)

Resellers waste evenings browsing marketplaces and researching prices, and most “deals” are not worth the time or storage.

The threads (in our words)

  • A part-time reseller who logged 2,000+ flips built listing alerts and price research scripts, then reports about $3,500 CAD profit in a month on roughly 12 hours of active work and is turning the tools into a product for other resellers. Read the thread on r/EntrepreneurRideAlong ↗ (opens in new tab) Oct 17, 2026 · u/jalalibrahimi · upvotes not available

Reddit blocks automated reads, so we couldn’t record upvote or comment counts. Revenue figures are the poster’s own claim (self-reported), not verified. The business below is our own design inspired by these threads.

Who it’s for

Part-time and full-time resellers who already flip on marketplaces and want fewer, better alerts.

Adapt it to your industry

  • Start with one niche or customer type, then expand.
  • Ask your first 10 customers what they would pay before you build more.
  • Keep a human check on anything sent in a customer’s name.

Step by step

  1. Have the reseller upload past flip history or pick categories that worked for them.
  2. Schedule agents to watch public marketplace search pages within each site’s terms and score new listings against sold comps.
  3. Send a short alert with buy price, expected resale, fees and drive time; the human decides every purchase.
  4. Track which alerts they buy and improve the score weekly.
  5. Charge a monthly plan through Stripe.
  6. Grow in reseller communities and with SEO pages per marketplace and category.

Ready-to-copy prompt

Here are 20 of my past flips [paste spreadsheet]. List the deal patterns that made the most profit per hour, and write alert rules (category, max buy price, min margin) an agent can follow.

Start with AI

Opens the AI with this guide and the prompt filled in.

Open in ChatGPT (opens in new tab)Open in Claude (opens in new tab)Open in Grok (opens in new tab)
Time
2–6 weeks for a first versionOur estimate

Your autonomous stack

Autonomy: Listings, emails, support and fulfillment partners run automatically. Your part: Weekly: approve new products and check refunds (about 1 hour).

Every layer an agent-run business needs, in order. Prices are public list prices, checked Oct 16, 2026.

  1. Agent (the brain): Grok Bot (agent + scheduled routines) (opens in new tab) (Included with The X Subscription Premium $30/mo (Super $100/mo for more usage; Plus $8 does not include Grok Bot)). Grok Bot runs the business day to day: writes, answers, decides small things and reports to you. Claude Code or Codex are alternatives.
  2. Build and hosting: Cursor (opens in new tab) (Free tier · Plus $8/mo · Premium $30/mo), Vercel hosting (opens in new tab) (Hobby free · Pro $20/mo), Supabase database (opens in new tab) (Free tier · Pro from $25/mo). The product or service your customers use.
  3. Payments: Stripe payments (opens in new tab) (No monthly fee · 2.9% + 30¢ per card payment). Automatic checkout and receipts. Other options: PayPal Checkout (3.49% + 49¢) or Lemon Squeezy (5% + 50¢, handles sales tax).
  4. Customer acquisition: Buffer (scheduled X posts) (opens in new tab) (Free plan (3 channels, 10 queued posts each) · Essentials $5/mo per channel, billed yearly), beehiiv newsletter (opens in new tab) (Free up to 2,500 subscribers). Agent-written SEO pages, scheduled X posts and a weekly newsletter.
  5. Delivery: Grok Bot (agent + scheduled routines) (opens in new tab) (Included with The X Subscription Premium $30/mo (Super $100/mo for more usage; Plus $8 does not include Grok Bot)). A Grok Bot routine delivers the product or result as soon as someone pays.
  6. Support: Grok Bot (agent + scheduled routines) (opens in new tab) (Included with The X Subscription Premium $30/mo (Super $100/mo for more usage; Plus $8 does not include Grok Bot)). Grok Bot answers the support inbox; anything unclear is flagged for you.
  7. Monitoring and schedule: Grok Bot (agent + scheduled routines) (opens in new tab) (Included with The X Subscription Premium $30/mo (Super $100/mo for more usage; Plus $8 does not include Grok Bot)). Grok Bot scheduled routines run each day: send, check for failures, alert you if something breaks.
  8. Analytics: Google Analytics (opens in new tab) (Free). Tracks visits, signups and sales so the agent can report what works.
  9. Human checkpoint: Weekly: approve new products and check refunds (about 1 hour).
  10. Price: charge $29 per reseller (monthly alerts plan). Offer the first 3 customers a founding price for honest feedback.
Monthly cost$30–$110/monthFree tiers → paid plans of the tools above. Card fees come out of each sale.
What you could earn · EstimateEstimate: 40 resellers × $29 = $1,160/moOur estimate, not a fact or a promise. It’s simple math if you land these customers at this price.
Details: source, numbers and tags

What they did

Agents watch public marketplace listings, score deals against past flip data and ping the reseller only when a buy looks worth the drive. We designed this business from real Reddit threads; it is an idea for you to build, not a description of the posters’ businesses.

How it went

Found on Reddit in r/EntrepreneurRideAlong (1 thread). Upvote and comment counts weren’t retrievable, so none are shown. On X, 64 posts matched our search for this idea in the 7 days to 2026-10-18.

Worth knowing

Only use public listing pages within each marketplace’s terms; the human always decides what to buy; never scrape private messages or bypass site limits.

Difficulty
BeginnerOur rating
Time to build
Not reportedOur estimate
Monthly cost
Not reported
Revenue
~$3,500 CAD profit in one month on ~12 hours of work (self-reported, r/EntrepreneurRideAlong; personal use before product launch)Self-reported: The founder’s own claim; not verified by us
Engagement
No public countThe source shows no number
X buzz
34.5 · 64 posts in 7 days32 likes, 1 reposts, 9 replies, 0 quotes on 11 top posts · fetched Oct 18, 2026 · query: (reseller OR reselling OR "marketplace flips" OR "facebook marketplace") (alert OR alerts OR automate OR automation OR AI) (deal OR deals OR listing) -is:retweet lang:en

Posted · Added Oct 18, 2026

Original builder recipe

  • ChatGPT
  • Claude
  1. Have the reseller upload past flip history or pick categories that worked for them.
  2. Schedule agents to watch public marketplace search pages within each site’s terms and score new listings against sold comps.
  3. Send a short alert with buy price, expected resale, fees and drive time; the human decides every purchase.
  4. Track which alerts they buy and improve the score weekly.
  5. Charge a monthly plan through Stripe.
  6. Grow in reseller communities and with SEO pages per marketplace and category.

Tags

Read the original

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