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Building Rollick in 40 Days

March 25, 2026 8 min read by @SipMyBeers

The Problem

I'm a reseller. I buy things at thrift stores and sell them on eBay, Facebook Marketplace, Craigslist, OfferUp, and Mercari. The process looks like this:

  1. Find an item I think is underpriced
  2. Research what it sells for (search eBay sold, check multiple sites)
  3. Buy it
  4. Take photos
  5. Write a description
  6. Post to Platform 1, fill in all fields, upload photos
  7. Repeat for Platforms 2, 3, 4, 5
  8. Track which platforms it's listed on in a spreadsheet
  9. When it sells, update the spreadsheet, remove from other platforms

Steps 2 and 6-7 are the problem. Research takes time. Cross-posting takes 20+ minutes per item. Tracking is manual. So I started building.

Week 1-2: rollick-scan

The first tool: an AI scanner. Take a photo of any item and get back what it is, condition assessment, rarity score, resale price from recent sold data, and a buy/pass verdict.

It runs locally using Ollama + LLaVA. No API keys, no cloud dependency. Then I added Meta Ray-Ban support: press the side button on your glasses, it captures what you see, processes it, and speaks the result in your ear. You can scan items hands-free while walking through a store.

github.com/SipMyBeers/rollick-scan (MIT license)

Week 3-4: rollick-autopost

The second tool: cross-platform posting. One API call, five platforms. eBay uses the official Sell API. Facebook, Craigslist, OfferUp, and Mercari use Puppeteer browser automation with human-like delays and fallback mode.

Send a title, description, price, photos, and it handles all five simultaneously. 30 seconds instead of 20 minutes.

github.com/SipMyBeers/rollick-autopost (MIT license)

Week 5-6: rollick.bet

The web app. This is where the tools come together:

Built on Supabase (auth + database), deployed to Cloudflare Pages.

Week 7-8: Mobile App

React Native + Expo. Same features as the web app plus camera scanner integration, native photo upload, and push notifications. Targeting App Store submission before launch.

Week 9-10: Launch Prep

Where I am right now. 40 days until May 4.

What's Left

The Stack

Frontend: HTML/CSS/JS (no framework), React Native + Expo (mobile)
Backend: Supabase (PostgreSQL + Auth + Storage + Edge Functions)
AI: Ollama + LLaVA (local inference, zero API costs)
Automation: Puppeteer (marketplace posting)
Hosting: Cloudflare Pages
APIs: eBay REST API, GitHub API

Everything is being built in public. Both core tools are open source. Star the repos if they're useful to you.

Join the Waitlist

Be first in when Rollick launches May 4, 2026.