A good e-commerce integrator is the foundation of multichannel sales. We compare Base.com, Apilo, IdoSell and other solutions.
Author: Borys Terlecki · marketplace sales and implementations at Commercraft · updated: September 2026
In brief
An integrator connects your marketplaces, online shop, warehouse and shipping in one panel. Without one, selling on several platforms means manual listing and stock levels that drift apart.
In Poland the largest is Base.com (formerly Baselinker), alongside Apilo, Sellasist, xSale, SellIntegro and IdoSell, each with a different profile and a different way of counting the plan limit.
Your choice depends on scale and on the systems you already run: ERP, invoicing, warehouse. Test on a real sales channel and a real warehouse.
Selling on several marketplaces at once without an integrator means listing offers by hand, stock levels that drift apart and retyping orders. An integrator connects your sales channels, warehouse and shipping in one system. Below you will find what it does, how to choose the right one and what the tools available in Poland cost in September 2026.
An integrator links your sales channels (marketplaces, online shop) with your operations: warehouse, orders, shipping and invoicing. You work in one panel instead of logging in to five, and stock, prices and orders synchronise on their own. In Poland it is also called an “OMS” (order management system), or simply “Baselinker”, after the most popular tool.
Poland has one of the most developed integrator markets in Europe, largely thanks to Allegro, the largest marketplace in Poland, which pushed sellers towards automation earlier than Western marketplaces did. The biggest player is Base.com, known as Baselinker until May 2025: more than 30,000 businesses, over 2000 integrations and operations in 14 countries (source: base.com, 17.09.2026). Alongside it you will find several tools with clearly different profiles, from ERP connectors to shop platforms with their own marketplace module. There is plenty of choice, and the right one depends on what your business already runs on.
30k
businesses on Base.com
the largest integrator in Poland
2000+
Base.com integrations
platforms in Poland and across Europe
14
countries where Base.com operates
as of September 2026
2.2 / 5
Base.com rating on Trustpilot
nearly 700 reviews, 57% of them 1 star
Sources: base.com, 17 September 2026; trustpilot.com/review/baselinker.com, as of 17 September 2026.
| Tool | Best for | Net price (September 2026) | Marketplaces | Watch out for |
|---|---|---|---|---|
| Base.com | shops handling from 100 to thousands of orders a month, brands entering foreign markets (Super Merchant module), businesses that need WMS, PIM and a repricer in one tool | Freemium up to 100 orders, Business PLN 279 (EUR 63.94)+ PLN 0.99 (EUR 0.23) per order, Enterprise priced individually above 5000 orders or PLN 1m (EUR 229,184.33) GMV | over 2000 integrations, practically every platform in Poland and Europe | three price rises since 2024, no way back from Enterprise to Business |
| Apilo | small and medium-sized shops, Shoper users (Apilo belongs to the same group as this Polish shop platform) | Starter PLN 39 (EUR 8.94)(100 orders), Basic PLN 199 (EUR 45.61)(500), Professional PLN 399 (EUR 91.44)(1500), Optimum PLN 799 (EUR 183.12)(5000), 10% less when paid annually | Allegro (PL, CZ, SK), Amazon, Empik, eMAG, Kaufland, Decathlon, Modivo, TikTok Shop, Temu, over 650 integrations | the plan limit also counts active offers; live synchronisation and wholesaler feeds cost extra |
| Sellasist | shops with their own warehouse that want a WMS | PLN 59 (EUR 13.52)(100 orders), PLN 189 (EUR 43.32)(500), PLN 359 (EUR 82.28)(1000), PLN 699 (EUR 160.20)(5000), no commission on turnover | Allegro, Empik, Erli, eMAG, Kaufland, Modivo, Temu, OLX, Amazon in beta, over 400 integrations | WMS charged separately (from PLN 50 (EUR 11.46) per user), technical support only via a contact form |
| xSale | businesses running Comarch ERP Optima or XL, or Subiekt (popular Polish ERP and invoicing software) | Standard PLN 299 (EUR 68.53) a month on an annual contract (up to 1000 orders), PLN 600 (EUR 137.51) without a contract, PLN 299 (EUR 68.53) for each additional 1000 orders | Allegro, Amazon, Empik, eBay, Zalando, Ceneo, over 500 integrations | implementation takes 15-35 hours, a dedicated version starts at PLN 9,600 (EUR 2,200.17) |
| SellIntegro | businesses that mainly want to connect their ERP with sales channels | PLN 99 (EUR 22.69)(500 orders), PLN 199 (EUR 45.61)(2500), PLN 299 (EUR 68.53)(10,000), implementation PLN 1,450 (EUR 332.32)-4,700 | Allegro, Amazon, eBay, plus connectors to Base.com, Apilo and Sellasist | an ERP connector without full order management; the plan limit also counts products |
| IdoSell | shops built on IdoSell (around 8,000 shops) that also want to sell on marketplaces without a separate tool | plan subscription plus a fee per order, e.g. Business PLN 1.59 (EUR 0.36) per shop order and PLN 0.55 (EUR 0.13) per marketplace order | Allegro, Amazon, eBay, Kaufland, Empik, eMAG, TikTok, Morele | a shop platform with a marketplace module; no Erli, Zalando or Decathlon |
Net prices, monthly plans, from the vendors' price lists: base.com/pl-PL/cennik, apilo.com/pl/cennik-apilo, sellasist.pl/cennik, xsale.ai/cennik, sellintegro.pl/cennik, idosell.com (all read on 17.09.2026). Number of IdoSell shops: iai-sa.com, 2026. Integration counts as declared by the vendors.
Plan cost at 500 orders a month, PLN net
| PLN | |
|---|---|
| SellIntegro (ERP connector) | PLN 99 (EUR 22.69) |
| Sellasist | PLN 189 (EUR 43.32) |
| Apilo (Basic) | PLN 199 (EUR 45.61) |
| xSale (annual contract, up to 1000) | PLN 299 (EUR 68.53) |
| Base.com (Business) | PLN 774 (EUR 177.39) |
Calculated from the price lists in the table above: Base.com PLN 279 (EUR 63.94)+ PLN 0.99 (EUR 0.23) per order, the other tools on the plan that covers 500 orders. Excludes implementation, modules charged separately and IdoSell (per-order fee within the shop plan). Price lists read on 17 September 2026.
Base.com has the most public reviews, and opinion is divided. On Trustpilot it scores 2.2 out of 5 from nearly 700 ratings: 57% are one star and 36% five stars (as of 17.09.2026). The criticism is almost entirely about pricing: three price rises since 2024, and no way back to a cheaper plan once you cross the Enterprise threshold. Users praise its stability, the number of integrations and fast support; Base says it answers 80% of tickets within 15 minutes (sources: trustpilot.com/review/baselinker.com, 17.09.2026; base.com/blog, 4.08.2026).
The other tools have too few public reviews to draw conclusions from. You learn more by testing them on your own data: Base.com offers a 14-day trial, Apilo 21 days, Sellasist 30 days. Connect a real sales channel and a real warehouse during the trial, because the differences only show up in stock synchronisation and returns handling. Your first live offer tells you nothing yet.
If you are thinking of moving away from Base.com, we have worked out migration costs and break-even points in a separate article: Is there an alternative to Base.com.
The right choice depends on your scale and on the systems you already have. Check:
An integrator shows its full value when you enter German-speaking markets: you serve additional marketplaces and countries from the same stock and the same panel. Adding a platform comes down to configuration and category mapping, so the barrier to a new market drops. We cover the tools that lead on the German side in our article E-commerce integrators in DACH.
We help you choose an integrator that fits your scale and systems, implement it and connect it with your channels, warehouse and logistics, including for expansion into DACH. We set up automation to take repetitive work off your team. We implement Base.com as a partner, yet we always match the tool to your business and its systems. Want to put your multichannel sales in order? Get in touch. Before you commit, run the numbers in our marketplace ROI calculator.
EUR conversions: NBP rate of 18 September 2026 (table 182/A/NBP/2026), EUR 1 = PLN 4.3633.
We implement Base.com as a partner
We configure Base.com integrations, automation and modules around your marketplace sales process.
Borys Terlecki – marketplace sales and implementations at Commercraft. He previously worked on the operator side of marketplace platforms (Mirakl, Munich) and today onboards brands on marketplaces in Poland and the DACH region and runs their accounts.
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