Hidden costs in BigCommerce GMV caps?

BigCommerce’s plan tiers cap GMV: Plus stops at ~$1M trailing 12-month sales, Pro at ~$5M, Enterprise (negotiated) above that. Cross the cap and BC auto-bumps you to the next tier or forces a contract.

What this hides:

• Silent upgrades. A growing store crosses $1M and the Plus plan ($300/mo) jumps to Pro ($400–$700/mo) without much warning. Annualised that’s an extra $1k–$5k/yr you didn’t budget.
• Enterprise pricing is opaque. Above $5M GMV BC quotes Enterprise individually (typical: $20k–$50k/yr depending on traffic and feature set). The calculator uses ~$24k/yr at this tier — check your actual quote.
• Per-tx fees. BC charges 0% per-tx — matching Magento. This is one of the few platforms where per-tx isn’t a hidden cost.
• App / extension stack at the Enterprise tier. BigCommerce’s app marketplace is smaller than Shopify’s but apps for B2B (BundleB2B), reviews (Yotpo), and personalisation (Searchanise) run $400–$1k/mo each. A typical Enterprise B2B store ends up at $12k–$18k/yr in apps — the calculator allocates $12k/yr if B2B share > 25%.
• Stencil customisation ceiling. BC’s theme framework (Stencil) is more flexible than Liquid but less so than Magento PHP. If you need deep PDP or checkout customisation, dev hours run higher than the calculator’s estimate.

BigCommerce wins on TCO at the $1M–$10M D2C-light-B2B tier. Above that, the GMV-cap dynamic and Enterprise pricing make the math harder to predict — get a quote in writing.