battles / Platforms
BigCommerce vs Sylius
BigCommerce ($399/mo/mo, vibe code 4/10) vs Sylius ($1,200/mo/mo, vibe code 6/10). Sylius is the easier one to rebuild yourself — here is what you lose either way.
Platforms
$399/mo/mo
- MVP
- 2-3 weeks
- Full replacement
- 12-18 months
Platforms
$1,200/mo/mo
- MVP
- 2-3 weeks
- Full replacement
- 9-15 months
easier to rebuild
get the build prompt →price gap / year
$9,612/mo
running both / year
$19,188/mo
our call
Start with Sylius — highest vibe code, weakest moat.
BigCommerce
You can build a clean React shopping cart and a basic Node/Postgres backend with AI in a weekend. You cannot easily replace BigCommerce's deeply complex B2B pricing matrices, multi-inventory state machine, complex tax engines, or PCI-compliant checkout infrastructure without a massive ongoing engineering commitment.
you can rebuild
- Basic store frontend themes and responsive catalog display.
- Single-page checkout interface.
- Standard CSV product import/export tools.
- Basic customer group segmentation and manual coupon code engine.
- Simple multi-currency display and manual rate overrides.
what you lose
- Out-of-the-box PCI-DSS Level 1 compliant hosted checkout infrastructure.
- Native B2B enterprise suite (company account hierarchies, invoice payment terms, custom price lists).
- Deep pre-built integrations with top ERPs, POS systems, and tax services (Avalara, Vertex).
- 24/7 dedicated enterprise infrastructure monitoring and SLA guarantees.
- Access to Feedonomics surface for automated multi-channel marketplace feed management.
real moats
- Decade-long ecosystem of native ERP, CRM, and fulfillment integrations (Acumatica, NetSuite, SAP).
- Built-in enterprise B2B functionality (Company accounts, net terms, custom price lists, buyer permissions).
- Turnkey compliance stack (PCI-DSS Level 1, SOC 2 Type II, ISO 27001).
open source escape hatches
- Medusa MIT
- Saleor BSD-3
- WooCommerce GPL-3.0
Sylius
Sylius is free; what you pay for is the Plus licence, the Symfony expertise and years of hardened cart, promotion and taxation code. An AI can generate a comparable core in weeks, but promotion rules and multi-channel pricing are where custom builds rot.
you can rebuild
- Catalog, taxon tree and product variant/option modelling
- Cart and checkout state machine with address and shipping steps
- Order, payment and shipment records with status transitions
- Admin CRUD screens for products, orders and customers
- Channel-based multi-currency and multi-locale storefronts
what you lose
- A battle-tested promotion engine with rule/action composition
- Symfony ecosystem bundles (workflow, security, messenger) already wired together
- The Sylius Plus features: RMA, multi-source inventory, B2B partner accounts
- A large pool of agencies and developers who already know the codebase
- Upstream security patches and LTS upgrade paths
real moats
- Agency and developer familiarity with the Symfony/Sylius conventions
- Plugin ecosystem covering payments, ERP connectors and marketplaces
- Years of edge cases baked into the promotion, tax and shipping engines
open source escape hatches
- vendure-ecommerce/vendure MIT
- medusajs/medusa MIT
- saleor/saleor BSD-3
Questions people ask
Which is easier to rebuild with AI, BigCommerce or Sylius?
Sylius. It scores 6/10 on vibe code with a moat of 4/10, so an AI-assisted MVP takes about 2-3 weeks and a full replacement about 9-15 months.
Which one costs less, BigCommerce or Sylius?
BigCommerce at $399/mo/mo for a typical mid-market store. The gap between the two is about $9,612/mo a year.
What do I lose if I replace BigCommerce?
Out-of-the-box PCI-DSS Level 1 compliant hosted checkout infrastructure. Native B2B enterprise suite (company account hierarchies, invoice payment terms, custom price lists). Deep pre-built integrations with top ERPs, POS systems, and tax services (Avalara, Vertex).
What do I lose if I replace Sylius?
A battle-tested promotion engine with rule/action composition Symfony ecosystem bundles (workflow, security, messenger) already wired together The Sylius Plus features: RMA, multi-source inventory, B2B partner accounts
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