MAMI
Aug 2025
Overview
Custom e-commerce platform for MAMI — a handmade jewelry brand where every piece is unique and sells only once. Built as a Shopify alternative: fully customizable, nearly free to run, and easy to extend. Complete admin panel with product management, order tracking, discount codes, and a built-in CMS.
Key features
One-of-a-Kind Inventory
Each product sells once and disappears from the shop. No quantities, no restocking — the whole store is built around this model.
Dual-Currency Checkout
Every product has a PLN and EUR price. Customers toggle currency — cart, totals, and Stripe payment all follow.
Full Admin Dashboard
Products, orders, customers, discount codes, homepage content — all in one panel, built for exactly what the business needs.
Built-in CMS
Hero carousel, featured sections, photo gallery, scrolling marquee — all editable without code or a separate CMS service.
Stripe Payments
Secure checkout with automatic order creation, confirmation emails, and product status updates.
Discount System
Percentage and fixed-amount codes with usage limits, expiration, and per-currency values.
Screenshots
The Problem
MAMI makes handmade jewelry — each piece is one-of-a-kind.
The owner needed a store but Shopify didn’t fit: monthly fees for unused features, rigid templates, no control over the admin experience, and a quantity-based model that doesn’t work when every item is unique.
He needed a store that costs almost nothing to run, does exactly what his business requires, and can grow with it.
Design
The client came to me with a rough sketch drawn in a notebook — a minimalistic layout, clean and simple. I took that sketch and translated it into a working design preview, keeping the feel he was going for while filling in the details he hadn’t thought about yet. Everything was designed and approved before development started — no mid-build surprises.
Approach
Near-zero running costs. Vercel for hosting, Prisma Postgres for the database, Cloudflare R2 for images. At low traffic the monthly cost is essentially zero — only Stripe’s transaction fee on actual sales. Everything scales smoothly if traffic grows.
Admin panel built for this business. Not a generic settings page — a full management tool:
- Products — CRUD, batch image upload with auto-compression, dual pricing, collections, categories
- Orders — status tracking, full details with addresses, refunds
- Customers — list with order history and contact info
- Discounts — percentage or fixed codes, usage limits, expiration, dual-currency values
- CMS — hero carousel, two featured product sections, photo gallery by photographer, marquee, nav carousel. One tabbed page, no external service
One-of-a-kind inventory. Products go from available → ordered → sold. Payment automatically removes the product from the shop. No stock counts, no race conditions.
Dual currency. Each product has a PLN and EUR price set by the owner. Customer picks currency, everything follows — cart, discounts, Stripe checkout. No exchange rate APIs.
Guest checkout. No accounts, no passwords. Details, payment, confirmation email. Done.
Built to extend. Wishlist, blog, shipping integrations, customer accounts — these are additions to a clean codebase, not fights against a platform’s limitations.
Challenges
Bulletproof payment flow. One Stripe confirmation triggers order creation, address saving, product status change, discount usage, and confirmation email — all atomically. Failures roll back cleanly. Duplicate webhook calls are handled gracefully.
CMS image lifecycle. Upload, reorder, delete images from the admin — with automatic R2 compression, storage cleanup, and database sync happening behind a simple UI.
Discounts across currencies. Percentage codes work universally. Fixed-amount codes need separate PLN and EUR values — the system validates the right one exists before applying it.
| Shopify | MAMI (Custom) | |
|---|---|---|
| Monthly cost | ~$30-80/mo + apps | ~$0 at low traffic |
| Transaction fees | Stripe + Shopify cut | Stripe only |
| Admin panel | Generic, bloated | Built for this business |
| Inventory model | Quantity-based | One-of-a-kind native |
| Dual currency | Requires apps | Built in |
| CMS | Theme editor limits | Full control |
| New features | App marketplace only | Add anything |
| Ownership | Renting | Own the code |
Results
→ Full purchase flow from browsing to confirmation email — zero manual steps for the owner
→ Near-zero monthly costs — Vercel free tier, Prisma Postgres, Cloudflare R2
→ Owner manages everything independently — no developer needed for day-to-day
→ No vendor lock-in — new features are additions, not migrations
Need a site, a custom tool, or full e-commerce build?
Send scope, budget range, and timeline. I will reply with a realistic plan.
