What does the cost comparison actually look like at $5M GMV?

Use current BigCommerce terms and an equivalent Magento scope. BigCommerce changed its plan structure and introduced provider-dependent fees on self-serve plans in 2026; the applicable contract, billing cycle and payment mix matter. Add B2B Edition, apps, integrations and implementation where required. Compare this with Magento Open Source operations or a scoped Adobe Commerce offer. Sales volume alone cannot establish a cost winner, and old Pro or Enterprise estimates may not describe the proposed plan.

Official references: BigCommerce 2026 commercial update; Adobe Commerce pricing.