Stripe is the dominant payments infrastructure platform for online businesses. Standard pricing is published (2.9% + $0.30 per transaction for cards in the US), but enterprise customers ($1M+ annual volume) negotiate custom interchange-plus rates that can be 30–50% below the published list rates.
Stripe contracts (the Services Agreement) are generally short and standard — most negotiable elements are not the contract itself but the commercial terms (custom pricing, monthly settlement, hold-back percentage). Things to surface: chargeback policy, reserve hold-backs, and the right-to-terminate-for-risk clause that Stripe retains broadly.
