Edge cases, does this work for a small Warsaw boutique, an Allegro-seller-scale shop, or a B2B Polish industrial exporter?

All three, with very different scope:

• Small Warsaw boutique (PLN 500k, PLN 3M revenue), the Audit ($499) tier is usually right. Single BLIK or P24 integration, Polish-language Hyvä storefront, RODO banner, basic NIP validation, maybe one cross-border DE/CZ store. Often Magento is overkill at this size, we’ll honestly say so during audit and recommend Shoper or Shopify if it fits better.
• Allegro-seller scale (PLN 5M, PLN 50M, multi-channel Magento + Allegro + Amazon.pl + Empik), this is Magento’s sweet spot. Build ($4,999) tier covers it: full PL gateway stack, BaseLinker / Channable feed, Allegro multi-account, dynamic re-pricing, returns sync, stock buffer per channel. We’ve shipped exactly this for Polish electronics + fashion retailers.
• B2B Polish industrial exporter (PLN 20M+, exporting to DE / CZ / SK / UA, Comarch ERP XL backbone, Net-30 terms), Custom tier. Multi-store PL + DE + CZ catalogues, Comarch ERP XL real-time sync (orders + stock + pricing + credit limits), NIP-EU + VIES validation, KSeF XML pipeline, multi-currency PLN/EUR/CZK invoicing, B2B account-based catalogues + tiered pricing.

Audit always comes first, we map your specific stack before quoting.