Online store cost calculator 2026

The budget for an online store is one of the most underestimated costs in Polish business. Companies plan 15,000 zlotys and end up spending 60,000 zlotys - or vice versa: they overpay for features they never use.

The difference stems from one thing: e-commerce is not just a website with products. It's a platform, integrations with warehouse and couriers, payments, SEO, analytics and logistics - each of these elements has a price tag that you don't see in the first offer.

This calculator breaks down the budget into its first parts. Based on data from more than 50 e-commerce projects completed by Digital Vantage - from simple stores on Shoper to complex headless B2B platforms with ERP integrations.

E-commerce projects - 20 years on the market - ERP integrations, marketplace, payments - Own server infrastructure

Platform

SaaS platforms (Shopify) have lower upfront costs but higher monthly fees at scale

Platform choice

Platform determines your long-term flexibility and cost structure. SaaS locks you into monthly fees and transaction percentages; headless gives full control but requires more dev work upfront.

Shoper / Selly (SaaS PL)

+€5,000

WooCommerce (WordPress)

+€15,000

Shopify

+€18,000

Headless / Custom (Next.js)

+€75,000

Number of products

Large catalogs require data import scripts, category mapping, and QA testing for each batch. Over 1,000 SKUs typically adds 2–4 weeks of migration work alone.

Up to 100 SKU

100–1,000 SKU

+€3,000

Over 1,000 SKU

+€10,000

Design

Design directly impacts conversion rate — a well-designed shop can convert 2–3× better than a default template

Design level

Custom design covers product page layout, cart UX, and mobile breakpoints. Premium UX adds user research, A/B-tested component variants, and a full design system.

Platform template

Custom design

+€12,000

Premium UX design

+€25,000

Integrations

ERP integration is often the biggest hidden cost — budget separately

ERP integration (Subiekt / WF-Mag)

ERP sync requires bidirectional data mapping (orders → ERP, inventory → shop). Each ERP vendor uses a different API or flat-file protocol, so this is rarely reusable between projects.

+€12,000

Marketplace sync (Allegro / Amazon)

Marketplace sync handles offer publishing, order pulling, and real-time inventory updates. Allegro and Amazon each have separate REST APIs with different auth flows and rate limits.

+€8,000

Shipping (InPost / DPD / DHL)

Each courier requires a separate API integration for label generation and parcel tracking. Adding a second carrier after launch is roughly the same effort as the first.

+€500

Payments (Przelewy24 / PayU / Stripe)

On SaaS platforms payments are configured, not coded. On custom builds each gateway needs redirect flows and IPN callback handling. Price reflects a single gateway — each additional one costs extra.

+€500

Additional features

Features like B2B pricing and product search have outsized ROI — prioritise based on your customer type

B2B module (discounts, credit limits)

B2B requires a separate pricing layer: customer-group discounts, net/gross price switching, credit limit enforcement, and often a quote request flow — each adds complexity on top of the standard checkout.

+€25,000

Product search (Algolia / Typesense)

Dedicated search engines (Algolia, Typesense) provide typo-tolerance and faceted filtering that native platform search cannot match. Monthly fee covers the search index hosting.

+€6,000+€200/mo.

Product reviews & ratings

+€2,000

GA4 + Meta Pixel + Enhanced E-commerce

Enhanced E-commerce tracking (view_item, add_to_cart, purchase events) must be wired into every platform's checkout flow individually — it's not a simple tag-manager job and requires server-side event validation.

+€3,000

Multilingual store

Multilingual setup requires separate URL structures per language, hreflang configuration, and translating all system emails and checkout strings — not just product descriptions.

+€7,000

Promotions & coupons

On custom builds covers discount rules, coupon codes, bundle pricing and time-limited offers.

Customer accounts & order history

On custom builds includes registration, login, order tracking, saved addresses and wish lists.

Returns & refunds system

EU consumer law requires a 14-day return policy. Custom builds need a full RMA workflow.

Content

Content is often underestimated — descriptions and photos directly affect SEO rankings and conversion rate

Product descriptions

Price scales with catalog size — writing and optimising 1,000 descriptions is a different scope than 50.

+€2,500

Product photography

From stock imagery for a small catalog to a full studio session — the scope depends on the number of products.

+€2,000

SEO optimization

E-commerce SEO goes beyond meta tags — it includes structured data (Product schema), canonical handling for variant URLs, and category page content strategy.

+€2,000

Infrastructure (monthly)

SaaS monthly costs grow with traffic — plan for scale

Estimated implementation cost

€0 — €0

Estimated timeline

~1–1 weeks

›SaaS platform costs (Shoper, Shopify) increase with sales volume.

›ERP integration is often the biggest hidden cost — budget separately.

›Does not include product import, photos and descriptions.

Proceed to project

Where do these numbers come from?

E-commerce is one of the areas where the price range on the market is the largest. We have seen offers for an online store for 2,000 zloty and for 200,000 zloty - and both could be fair, because they described completely different projects. The calculator helps to understand these differences, not hide them.

Data basis

The price ranges in the calculator are based on e-commerce projects implemented by Digital Vantage: B2C and B2B stores, multi-language platforms, migrations between platforms, and integrations with ERP and marketplace systems. The data is updated annually - technology prices and labor rates change faster than in other IT industries.

What the calculator takes into account

' Platform deployment and environment configuration
' UX/UI design (depending on the level selected).
' Implementation of selected integrations (payments, couriers, marketplace)
' Basic technical SEO configuration
' Testing and commissioning the project with documentation

What the calculator doesn't take into account

' Product imports - priced separately depending on the source of the data and its quality
' Copywriting of product and category descriptions
' Product photography
' Configuration of advertising campaigns (Google Ads, Meta).
' Migration of data from the old store (orders, customers, history)
' Dedicated ERP modules - each integration priced individually

⚠️ Margin of Accuracy

The calculator gives indicative ranges with a margin of +/-25%. E-commerce has a high coefficient of valuation volatility - integration with a seemingly simple ERP system can cost 3,000 zloty or 25,000 zloty depending on the quality of the API and the number of business exceptions. Treat the result as a starting point for conversation.

Which platform is right for your store?

Choosing a platform is the most important decision in an e-commerce project. It determines the cost of implementation, the cost of maintenance, the possibility of development and, if you make a mistake, the cost of migration in 2 years.

Platform	When to choose	What to watch out for
Shoper / Selly	Startup up to 12 months, budget up to PLN 15,000, catalog up to 500 SKUs, no specific technical requirements	Limited control over the code. Subscription costs increase with scale. Difficult to migrate when growing.
WooCommerce	You already have WordPress, need plugin flexibility, team knows PHP, budget 8-25,000 zloty	Performance drops with a large directory without optimization. The cost of maintaining premium plugins can surprise you.
Shopify	Quick start on the international market, multi-currency sales, budget of 10-30 000 zloty for implementation	Commission on transactions if you don't use Shopify Payments. Limited checkout control on lower plans.
Headless / Next.js	Large catalog (1,000+ SKUs), B2B requirements, integrations with ERP, international plans, budget of 35,000+ zl.	Most expensive to implement. Requires a mature technical team on the client side or an agency with headless experience.

💬 Digital Vantage expert commentary
The most common mistake we see: a company chooses Shoper because it's cheaper to start, outgrows the platform after a year and pays more for the migration than the savings. The rule of thumb is simple - if you have ambitious growth plans or B2B requirements, start with a platform that will carry those plans. E-commerce migration is one of the most expensive projects in the industry, because you are moving not only code, but customer data, orders, SEO and integrations.

What does your result mean?

The result of the calculator is the sum of one-time implementation and monthly maintenance cost. Both are equally important - a store for 8,000 zl deployment but with a subscription platform of 800 zl per month costs more after 3 years than a 25,000 zl store on its own server.

Price ranges	What you get	What to watch out for
5,000 - 15,000 PLN	Store on SaaS platform (Shoper, Selly) with basic integrations of payments and couriers. Up to 200 SKUs, B2C standard.	Check the terms of subscription and sales commissions. Make sure that you can export product and customer data for possible migration.
15,000 - 35,000 PLN	WooCommerce or Shopify with custom design, integrations and a basic B2B module. Typical SME scope.	Ask about the cost of maintaining and updating plugins. WooCommerce with 20+ premium plugins is realistically 300-600 zl per month in licenses.
35,000 - 80,000 PLN	Shopify Plus or WooCommerce with extensive ERP/marketplace integrations, custom UI, advanced SEO.	In this regard, data architecture is key. A poorly designed category and attribute structure is very expensive to fix later.
80,000+ PLN	Headless or dedicated platform, B2B with per-customer pricing, full ERP integrations, multi-language, CDN.	Require phasing and a buffer budget (min. 15%). Projects of this scale regularly uncover undocumented requirements during implementation.

How much does the store really cost for 3 years?

The one-time cost of implementation is only part of the truth. An online store generates costs throughout its existence. Here's the full TCO (Total Cost of Ownership) picture for typical scenarios:

Position	Shoper (SaaS)	WooCommerce + VPS
Deployment (one time)	8,000 - 12,000 PLN	15,000 - 25,000 PLN
Platform subscription (per year)	2,400 - 9,600 PLN	0 PLN (open source)
Hosting / server (per year)	by subscription	1,200 - 3,600 PLN
Premium plug-ins (per year)	no	1,500 - 4,000 PLN
Technical care (annually)	minimum	3,000 - 8,000 PLN
Total cost after 3 years	25,000 - 50,000 PLN	30,000 - 55,000 PLN

^{The difference in TCO between platforms blurs after 2-3 years. The key question is not which one is cheaper to start with - but which one will bear your growth and how dependent you want to be on an outside provider.}

The e-commerce market in Poland - data and benchmarks

Benchmarks that help you assess whether your valuation is realistic.

Indicator	Market value
Median cost of implementing a B2C store in Poland	18 000 - 28 000 PLN net
Cheapest implementation on the market (SaaS, no custom)	from 3 000 PLN
B2B store with full ERP integration	From PLN 50,000
Average lead time for a B2C store	6 - 12 weeks
The most common reason for exceeding the budget	Underestimation of ERP integration and data imports
The cost of migration between platforms	40 - 80% of the cost of the original implementation
Value of the e-commerce market in Poland (2024)	approx. PLN 124 billion, up 12% y/y

Three hidden costs that no one prices upfront

' Product import - with 500 SKUs from Excel is 2-4 days of work. With 5,000 SKUs from the wrong data source - it's a separate project for 8-15,000 zl.
' Certifications and compliance - RODO, regulations, return policy. Lawyer + implementation of marketing compliance is realistically 2,000-5,000 zlotys which are not included in the agency's quote.
' The first 3 months after the launch - conversion optimization, UX fixes, live payment testing. Plan a service budget of 10-15% of the value of the implementation.

E-commerce projects - 20 years on the market - ERP integrations, marketplace, payments - Own server infrastructure

Where do these numbers come from?

Data basis

What the calculator takes into account

What the calculator doesn't take into account

⚠️ Margin of Accuracy

Which platform is right for your store?

Platform	When to choose	What to watch out for
Shoper / Selly	Startup up to 12 months, budget up to PLN 15,000, catalog up to 500 SKUs, no specific technical requirements	Limited control over the code. Subscription costs increase with scale. Difficult to migrate when growing.
WooCommerce	You already have WordPress, need plugin flexibility, team knows PHP, budget 8-25,000 zloty	Performance drops with a large directory without optimization. The cost of maintaining premium plugins can surprise you.
Shopify	Quick start on the international market, multi-currency sales, budget of 10-30 000 zloty for implementation	Commission on transactions if you don't use Shopify Payments. Limited checkout control on lower plans.
Headless / Next.js	Large catalog (1,000+ SKUs), B2B requirements, integrations with ERP, international plans, budget of 35,000+ zl.	Most expensive to implement. Requires a mature technical team on the client side or an agency with headless experience.

What does your result mean?

Price ranges	What you get	What to watch out for
5,000 - 15,000 PLN	Store on SaaS platform (Shoper, Selly) with basic integrations of payments and couriers. Up to 200 SKUs, B2C standard.	Check the terms of subscription and sales commissions. Make sure that you can export product and customer data for possible migration.
15,000 - 35,000 PLN	WooCommerce or Shopify with custom design, integrations and a basic B2B module. Typical SME scope.	Ask about the cost of maintaining and updating plugins. WooCommerce with 20+ premium plugins is realistically 300-600 zl per month in licenses.
35,000 - 80,000 PLN	Shopify Plus or WooCommerce with extensive ERP/marketplace integrations, custom UI, advanced SEO.	In this regard, data architecture is key. A poorly designed category and attribute structure is very expensive to fix later.
80,000+ PLN	Headless or dedicated platform, B2B with per-customer pricing, full ERP integrations, multi-language, CDN.	Require phasing and a buffer budget (min. 15%). Projects of this scale regularly uncover undocumented requirements during implementation.

How much does the store really cost for 3 years?

The one-time cost of implementation is only part of the truth. An online store generates costs throughout its existence. Here's the full TCO (Total Cost of Ownership) picture for typical scenarios:

Position	Shoper (SaaS)	WooCommerce + VPS
Deployment (one time)	8,000 - 12,000 PLN	15,000 - 25,000 PLN
Platform subscription (per year)	2,400 - 9,600 PLN	0 PLN (open source)
Hosting / server (per year)	by subscription	1,200 - 3,600 PLN
Premium plug-ins (per year)	no	1,500 - 4,000 PLN
Technical care (annually)	minimum	3,000 - 8,000 PLN
Total cost after 3 years	25,000 - 50,000 PLN	30,000 - 55,000 PLN

The e-commerce market in Poland - data and benchmarks

Benchmarks that help you assess whether your valuation is realistic.

Indicator	Market value
Median cost of implementing a B2C store in Poland	18 000 - 28 000 PLN net
Cheapest implementation on the market (SaaS, no custom)	from 3 000 PLN
B2B store with full ERP integration	From PLN 50,000
Average lead time for a B2C store	6 - 12 weeks
The most common reason for exceeding the budget	Underestimation of ERP integration and data imports
The cost of migration between platforms	40 - 80% of the cost of the original implementation
Value of the e-commerce market in Poland (2024)	approx. PLN 124 billion, up 12% y/y

Online store cost calculator - how much does e-commerce really cost

Platform

Platform choice

Number of products

Design

Design level

Integrations

Additional features

Content

Infrastructure (monthly)

Where do these numbers come from?

Data basis

What the calculator takes into account

What the calculator doesn't take into account

Which platform is right for your store?

What does your result mean?

How much does the store really cost for 3 years?

The e-commerce market in Poland - data and benchmarks

Three hidden costs that no one prices upfront

Platform

Platform choice

Number of products

Design

Design level

Integrations

Additional features

Content

Infrastructure (monthly)

Where do these numbers come from?

Data basis

What the calculator takes into account

What the calculator doesn't take into account

Which platform is right for your store?

What does your result mean?

How much does the store really cost for 3 years?

The e-commerce market in Poland - data and benchmarks

Three hidden costs that no one prices upfront