Online stores · Warsaw
Custom online store development end to end: a catalog, cart and checkout that don't lose the buyer on the way to the order. Built on Next.js - fast, multilingual and Google-ready from day one.
<1s
catalog load
+30%
checkout conversion
100
/100 PageSpeed
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The problem
Stores that “don't sell” almost always leak in the same three places. Check yours - and count how much drains through them every month.
The customer added a product, opened checkout - and left: five steps, forced registration, no BLIK. In Poland up to 70% of carts never reach payment, and most of that is cured by a plain decent checkout.
The marketplace takes a cut of every sale, raises its fees and keeps your customer base to itself. One disputed review or an account block - and sales stop. That's not your business, that's renting a counter.
Product pages without proper titles, duplicate URLs, zero structured data. People search “buy … Warsaw” - and the results show Allegro and your competitors, not you.
Demonstration
A catalogue, cart and checkout that never lose the buyer: fill the basket and place a delivery order right here. #1 on Google and 100/100 in Lighthouse.
New collection
Winter 2026
Shop nowFormats
Three typical scenarios. Not sure which is yours - tell me what you sell on a call. Sometimes the honest answer is “start on Allegro, build the store later” - and that's exactly what I'll say.
A catalogue up to 100 products, cart and payments - everything to start selling from your own domain.
For a first store and D2C brands
A large catalogue with warehouse, Allegro and accounting integrations. A store as a system, not a storefront.
For established retail and wholesale
Moving off Shoper, Wix or slow WooCommerce onto a fast architecture - without losing rankings.
For stores that hit the platform's ceiling
Industries
Every niche has its own bottleneck in the catalog or the checkout. These are the ones I run into most.
Size charts, colour variants, fast filters and returns in two clicks. The product page loads in under a second, so people browse the catalog to the end.
Ingredients, volume, replenishment subscriptions and gift sets. Ingredients and warnings are marked up separately to stay clear of ad moderation.
Lookup by VIN and make, cross-reference of equivalents, supplier availability. Supplier price lists sync automatically instead of by hand in Excel.
Large photography, fabric options, delivery priced by dimensions and assembly as an add-on. Measurement requests arrive with a photo of the room.
Delivery zones, time slots, minimum basket and one-tap reordering. Works on a phone even on a weak connection.
Per-account pricing, credit limits, ordering by SKU list and invoice download. The retail storefront and the wholesale entrance live on one site.
Model comparison, spec tables, warranty and trade-in. Feeds for Google Shopping and Allegro generate themselves.
Instant delivery of a file or key, licences, gated content and recurring billing. VAT by buyer country is calculated automatically.
A sales channel of your own next to Allegro: your prices, your customer data and no marketplace commission on every order.
Integrations
A store sells when payments, delivery and back office run themselves. Here's what I hook up - most agencies don't even mention this part.
Customers pay the way they're used to paying in Poland - one click, no extra screens.
Shipping costs calculate themselves, labels print from the admin, customers see tracking.
Stock, orders and invoices sync without manual work or late-night Excel.
Analytics sees every sale, and GDPR plus cookie consents are set up so your ads don't go blind.
Don't see your system on the list? I can most likely hook it up anyway - ask on the call.
A clean catalog with filters, search and product pages that sell: gallery, specs, reviews and real-time stock.
BLIK, Przelewy24, cards, Apple Pay and Google Pay, Stripe. The buyer pays in one tap - no redirects that drop the cart.
Fast checkout, guest orders, shipping calculation and promo codes. Fewer steps to the order - fewer abandoned carts.
Stock sync, order export to your CRM, integration with InPost, DPD, Poczta Polska and fiscalization.
PL / EN / UA / RU, correct hreflang, Product/Offer schema, sitemap and feed - products get indexed and reach Google Shopping.
LCP under 1 second, server-side conversion tracking, GA4 and purchase events - you see what actually makes money.
Zero risk
Not verbal promises - clauses in the contract we sign before work starts.
I name the price before we start and don't change it midway. If the scope grows - we agree on a new quote first, then I build.
The launch date is written into the contract. If a delay is my fault - you get a discount for every week of slippage.
Domain and hosting in your name, code in your GitHub, the customer and order database - yours alone. Zero lock-in to me.
For a month after launch I fix things free: copy, sections, small changes. No tickets, no queues, no “that's a new quote”.
Process
The typical plan for a starter store. A bigger project with integrations takes 4-6 weeks through the same steps. Your side of it is a couple of hours, not a second job.
30 minutes on your product and process: what you sell, how you ship, where stock levels come from. Then the quote, the category structure and a contract with a launch date.
Homepage, catalogue, product page and cart - built straight in code. You browse a live link from your phone and comment; I adjust as we go.
I connect BLIK, Przelewy24 and cards, set up InPost and couriers, add the GDPR banner, Consent Mode v2 and the terms pages. Then I run test payments.
We load the products, walk orders from cart to invoice, switch on analytics. I hand over access and show you how to run the store from the admin.
Pricing
Warsaw studios: 15,000-30,000 zł
Migration from WooCommerce, Shopify or PrestaShop without losing rankings.
Warsaw studios: 10,000-18,000 zł
A ready catalog with cart and payments - for a fast sales start.
Warsaw studios: 25,000-60,000 zł
Warehouse, CRM and shipping integrations for your real processes.
Rate ≈ 4.3 zł per €1. The final price is fixed after a 30-minute call. Post-launch edits - €35/hr, no mandatory retainer.
Describe the task in two sentences. You get a fixed price, a timeline and a plan. If it isn't a fit for us, we say so straight away and point you elsewhere.
Comparison
Every path has its price - it's just not always printed on the tag. Here's the honest long-run breakdown.
| Own store (buildbyalex) | SaaS: Shoper, Shopify | Allegro | |
|---|---|---|---|
| Getting started | from €1,090 one-off | 70-300 zł/mo subscription | free to start |
| Commission per sale | 0% (gateway ~1% only) | 0-2% + plan | 6-15% + promotion |
| Fees after a year | ≈ 0 zł mandatory | 840-3,600 zł and rising | tens of thousands zł in fees |
| Customer base | yours | stays with the marketplace | |
| Design and brand | templates with add-ons | a listing like everyone's | |
| SEO and Google | capped by the platform | Allegro ranks, not you | |
| You own code and data | you rent the platform | you rent the counter | |
| Features for your process | anything | plan and app limits | none |
Allegro is a fine sales channel. The problem starts when it's the only one. Figures from public platform and marketplace price lists, autumn 2025.
Do the math
A 6-15% commission per sale looks harmless until you add it up over a year. Move the sliders to your numbers.
Commission depends on the category, paid promotion comes on top. Your own store won't replace Allegro on launch day - but it stops feeding someone else's marketplace on every sale and starts building your own customer base.
Commissions per year
39,600 zł
goes to the marketplace yearly
3,300 zł
per month
8×
own stores that money buys
It depends on the number of products, integrations and design. A simple store on a ready catalog starts at €1,090; a store with warehouse, CRM and custom logic starts at €2,900. The exact quote is fixed before we start - no hourly surprises.
A typical store takes 3-5 weeks from kickoff. With warehouse, shipping and fiscalization integrations - 6-8 weeks. The date is fixed in writing before we start.
All the popular ones in Poland: BLIK, Przelewy24, cards, Apple Pay and Google Pay, plus Stripe and PayPal for international buyers.
Yes. I migrate from WooCommerce, Shopify, PrestaShop and OpenCart while keeping products, orders and SEO URLs - without losing Google rankings.
By default on Next.js (headless commerce: MedusaJS, Stripe, Sanity). It's faster and more secure than a typical WooCommerce. If you already run WooCommerce or Shopify, I can extend or migrate it.
Yes. Technical e-commerce SEO is built in: Product/Offer schema, clean product and category URLs, sitemap and a Google Shopping feed. Product pages index from the first days.
We work across all of Poland and remotely - Warsaw, Kraków, Wrocław, Gdańsk, Poznań or a smaller town, it makes no difference. Calls, demos and handover happen online; the contract and payment are remote. An in-person meeting in Warsaw is available on request.
The domain is about 70-160 zł a year, hosting is pennies or zero, the payment operator takes about 1-1.5% per transaction. That's it. No platform subscription and no marketplace percentage on every sale. For comparison: on SaaS you pay 70-300 zł a month plus plan limits; on Allegro, 6-15% of turnover.
I close the technical side: the terms and privacy pages, the GDPR banner, Consent Mode v2, and correct 14-day return handling in the order flow. The legal texts themselves come from your lawyer or proven Polish templates - I'll point you to them. The result: the store doesn't scare customers away and passes ad-platform verifications.
Yes, that's table stakes. Products, prices, stock, photos, promo codes and order statuses are all yours to manage in the admin, no developer needed. If Baselinker or your supplier's warehouse manages the products - I set up a sync and you touch nothing by hand.
Yes. From 2026 Poland is phasing in mandatory KSeF e-invoices, and stores that issue invoices by hand are in for a fun February. I wire invoicing through an integration from the start, so switching to KSeF is a settings update, not a store rebuild.
A starter store starts at €1,090, a business store with warehouse and logistics integrations at €2,900, a migration from an existing platform at €1,490. That covers the storefront, cart, payments, shipping, baseline SEO and admin panel training.
I can, if your processes are already built around them. By default I build on Next.js: faster, cheaper to run and no monthly fees per feature. I'll show you the difference using your own traffic numbers.
Allegro takes a commission on every order and keeps the customer data, SaaS platforms charge a subscription and cap what you can change. Your own store is paid for once and keeps both the customers and the margin. That doesn't mean abandoning Allegro - most of the time they run side by side.
Yes. BaseLinker, Subiekt, suppliers, Google Sheets, ERP - stock and orders sync both ways. An order from the store lands in the same place as an order from Allegro.
Yes. Individual price lists, credit limits, ordering by SKU list, repeat of a previous order and invoice download. The wholesale entrance can sit behind a login on the same site as retail.
What clients say
A few words from founders and teams we've shipped for.
Launched our store in 11 days - multilingual, fast, and already on page one for three of our main keywords.
The Telegram bot handles the first conversation with every lead now. My sales rep only steps in when the deal is hot.
Leads land in our CRM with every field already filled. No more copy-pasting from chats - the pipeline moves itself.
Shipped to the App Store and Google Play in three weeks. The handover docs let my team take it from there without me.
Set up our Google and Meta ads from zero. Cost per lead dropped by about a third in the first month.
He rebuilt the site and six weeks later ChatGPT was recommending us by name. Didn't know that was even possible.
Free 30-minute call. No sales pitch - just a real conversation about what you need and whether we're the right studio to build it.
No sales pitch - just a clear read on your scope.
