SellStein
Run Your Entire Business with AI
What is SellStein?
SellStein is an all-in-one e-commerce and business operations platform that replaces the entire SaaS stack a merchant typically needs. Instead of juggling Shopify for the store, Notion for tasks, Asana for project management, Mailchimp for emails, and separate tools for analytics, invoicing, and CRM — SellStein consolidates everything into a single dashboard. With 54+ built-in features, 13 AI modules, and support for 195+ countries in 20 languages, it is built for merchants who want to run their entire business from one place — without platform fees eating into their revenue.
The problem we set out to solve.
We spent years trying to scale businesses in industries that most platforms classify as "high-risk." Legal products, legal services — but accounts got frozen overnight, stores shut down without warning, payment processors terminated partnerships. Not because of violations, but because of product categories. On top of that, the tool chaos: Shopify for the store, Notion for tasks, Mailchimp for emails, separate apps for invoices, reviews, loyalty programs. We spent more time managing tools than growing the business. And the fees — Shopify charges 2.9% transaction fees plus $39/month minimum plus paid apps for every basic function. Gumroad takes 10% + $0.50 per sale. At growing revenue, that becomes absurd. We experienced firsthand how platforms lock accounts without explanation, freeze payouts, and destroy businesses overnight. Not because of fraud — because an algorithm didn't like the product category. That should never happen when someone runs a legal business.
How we built it.
We built everything natively — 54+ features built-in instead of an app store where every basic function costs $20/month extra. The entire platform runs on Cloudflare's edge infrastructure (Workers, D1, KV, R2) for sub-50ms response times and 99.9% uptime. 13 AI modules that aren't generic ChatGPT wrappers — the Copilot trains on actual store data (products, orders, customers), and the Autopilot runs 24/7 executing tasks autonomously. 50+ payment providers so sellers are never dependent on a single processor. A drag-and-drop store builder with 31+ customizable sections. Full RBAC with 104 granular permissions across 6 roles. And a Merchant API with HMAC-SHA256 authentication for developers who want to build on top of the platform. The result: a monorepo with 247 database tables, 117 API route files, 150+ pages, and 634 commits — built by two people.
See it in action.
Under the hood.
What we paid attention to.
Fairness Across All Legal Industries
No surprise terminations. No discriminatory policies against legal product categories. If your business is legal, you deserve a platform that treats it that way. We are the only platform that openly positions itself as high-risk-friendly and communicates that on the website.
Zero Platform Fees
0% transaction fees from the Growth plan onward. We don't believe a platform deserves 10% of revenue just because it provides a checkout page. Sellers keep what they earn.
AI That Knows Your Business
AI isn't a marketing buzzword here. The Copilot trains on your actual data — products, orders, customers — and gives context-aware recommendations. The Autopilot runs 24/7 with 13 specialized modules, from ad intelligence to SEO audits to automated content generation.
Payment Independence
50+ payment providers integrated so sellers are never dependent on a single processor. If one provider drops you, you switch — not your entire platform. This is critical for high-risk verticals where processor relationships are fragile.
Replace the Entire Stack
We don't just replace the store — we replace Shopify + Notion + Asana + Mailchimp + Analytics in one platform, starting at $0/month. 54+ native features mean sellers stop paying for 10 separate tools and manage everything from one dashboard.
Edge-Native Architecture
The entire platform runs on Cloudflare's global edge network — zero cold starts, sub-50ms response times worldwide. No traditional servers, no scaling headaches. D1 for the database, R2 for storage, KV for caching, Durable Objects for realtime features. Built for 99.9% uptime.
Where we are today.
SellStein is live with 50+ businesses on the platform. We are early and honest about it. The pricing was recently refined — Starter: Free + 5% per sale, Growth: $19/month + 0% fees — and the Founding Seller Program is running with the first 50 spots. Feedback from sellers is positive regarding features and UX. The biggest challenge is trust: people want to see that the platform stays before they migrate. Next milestones: onboarding sellers with real volume who can serve as case studies, expanding the SellStein Discover marketplace, deepening payment provider partnerships for high-risk verticals, and preparing the Product Hunt launch to gain visibility beyond direct outreach channels.
Similar project? Let's talk.
We're always open to new challenges. Tell us about your idea and we'll figure out how to make it real.