E-commerce Software — Custom Instead of Monthly Fees
Saitami builds custom e-commerce software on Next.js and PostgreSQL — no monthly Shopify fees, no 2% plugin commission, no third-party code you cannot control. A headless commerce platform you fully own, optimised for conversion, with Speedy, Econt and Stripe from day one.
What the e-commerce software includes
Product catalog with variants
Unlimited variants — colour, size, material, bundle. Per-variant price, stock, barcode, images and SEO meta. Bulk import from Excel or ERP, drag-and-drop ordering, automatic related products and cross-sell blocks.
Fast checkout — one-page or 2-step
Single-page checkout with inline validation, address autocomplete, guest option, Apple Pay and Google Pay. Optional 2-step flow. Abandoned cart recovery via email and Viber in the first 24 hours.
Speedy, Econt, in-house courier
Automatic carrier selection by location, weight and COD. Electronic waybill, QR code, live tracking in admin and a branded tracking page for the customer — not a generic carrier screen.
Stripe, ePay, myPOS and COD
Stripe and myPOS for cards with 3D Secure, ePay.bg for local-preference customers, COD with automatic reconciliation from the courier. Stored cards, recurring billing and automatic refunds — no bank phone calls.
Multilingual and multi-currency
One store, eight languages, automatic switching by IP. EUR primary, RON for Romania, RSD for Serbia. Prices configured per market — proper pricing strategy, not just currency conversion.
SEO and native mobile option
Server-side rendering on every product and category page, structured data for Product / Offer / Review, sitemap split by type, Core Web Vitals green. Admin for no-code management; native iOS / Android app option after v1.
Who it is for
Brands above €100K annual revenue
At this scale, Shopify Plus, plugin fees and commission easily pass €8,000 per year — the price of a full custom build. Owned code pays back in under 18 months and stops scaling with revenue.
Omnichannel retailers
Physical shop, online site, eMAG marketplace and B2B channel. One catalog, one stock balance, one customer base. Orders from every channel land in one admin board with shared promotions and loyalty.
Boutique brands with complex catalog
Fashion, jewellery, made-to-order furniture, gourmet food — categories where SaaS platforms break around configurators, bundle pricing or atelier workflows. Custom architecture delivers the exact UX.
How we build your custom store
1. UX research and conversion benchmarks
We analyse the current store, Hotjar, GA4 funnels and top 10 competitors. Hypotheses are defined — button copy, checkout steps, PDP layout. A Figma prototype is tested with 5 real customers before code.
2. Headless commerce architecture
Next.js with App Router, PostgreSQL for catalog and orders, a dedicated API layer feeding web, mobile and marketplaces. CDN caching, ISR for products, image optimisation via next/image. See our custom software development.
3. ERP, courier and payment integrations
REST or webhook integration to your ERP for catalog and stock, Speedy / Econt / DPD for waybills, Stripe / ePay / myPOS for payments, eMAG as second channel. See our API integrations and ecommerce development.
4. Launch, A/B tests, iteration
Soft launch with 10% of traffic, A/B test of checkout variants in the first 30 days, weekly reviews of conversion rate, AOV and LTV. Backlog prioritised by revenue impact, not subjective preference.
Why Saitami
conversion rate
average uplift versus old Shopify or WooCommerce store after re-platforming to a custom online store
monthly platform fees
no Shopify Plus or WooCommerce premium subscriptions — pay once, own the code forever
starting investment
for a conversion-optimised store with catalog, checkout, Speedy / Econt and Stripe — one-off
Related: delivery tracking system for a branded tracking screen and ERP for online store for full automation of warehouse, orders and invoicing. We also recommend API integrations between the e-commerce software and your accounting or CRM stack.
Frequently Asked Questions
Why custom e-commerce software instead of Shopify or WooCommerce?
Shopify Plus is €2,000 per month plus 0.15% commission — €24,000+ yearly at serious volume. WooCommerce is free, but each plugin is €99-€299 yearly and the stack quickly hits €3,000 recurring. A custom build is one-off €8,500-€35,000, with no feature limits and code that is yours. After 14-20 months at normal revenue it is cheaper.
How long does it take to launch the online store?
A base custom online store with catalog, checkout, one courier and one payment provider goes live in 6-8 weeks from signed contract. Larger projects with multi-currency, marketplace integrations, B2B portal and a custom configurator usually take 12-16 weeks. We start with an MVP that generates orders from day one and iterate in 2-week sprints.
Who owns the code and the data?
You — fully and unambiguously. Source code lands in a GitHub or GitLab repository under your account from day one. The database with products, orders and customers lives on your server or your cloud account (AWS, Hetzner, DigitalOcean). Saitami is a contractor, not a landlord — no vendor lock-in.
How much does e-commerce software cost?
A starter conversion-optimised store with catalog, fast checkout, Speedy / Econt and Stripe begins at €8,500 one-off. A mid-size project with multi-currency, eMAG, ERP integration and branded tracking is €15,000-€25,000. A large headless commerce build with B2B portal, configurator and native mobile app is €30,000-€60,000.
Ready for a custom online store without monthly fees?
Show us your store or idea and we will scope a concrete e-commerce software rollout — conversion benchmarks, an exact € estimate and e-commerce software you fully own.
Book a demo →