Key takeaways
- Marketplace cost depends on multi-sided workflows: sellers, buyers, and operations.
- Integrations (payments, shipping, tax) and governance drive complexity.
- Separate build cost from run cost: support, fraud, infrastructure, and iteration.
What drives marketplace cost
Marketplaces are more complex than single-seller eCommerce because you need onboarding for sellers, catalogs across vendors, payouts, dispute handling, and operational tooling for support and moderation.
Core modules and integrations
Define the minimum set of modules for MVP, then expand. Integrations should be validated early with sandbox environments and failure-mode testing.
- Payments & payouts: split payments, refunds, chargebacks, KYC.
- Shipping: carriers, tracking, returns workflows.
- Tax & compliance: invoicing, VAT/GST, audit logs.
Build vs run costs
Plan for ongoing run costs: customer support, fraud and trust tooling, infrastructure, monitoring, and continuous product improvement based on analytics.