Merchant of record
Choose checkout by billing shape, not by logo.
For this resource, MoR is assumed. The provider sells to the customer, handles customer tax and checkout operations, then pays the business.
Fee model
Compare the posted platform fee.
This shows the public platform fee where a simple formula exists. Payout, dispute, refund, recovery, PayPal, and custom-contract effects are not fully modeled.
Vendor cards
Rank by product shape.
Scores favor small software launches, several products, simple operations, and less tax/admin drag.
Feature matrix
Check the operational fit before launch day.
Green means native fit, blue means usable, amber means caveat, red means not the reason to choose it.
Before using publicly
Run one full payment loop.
Test payment, invoice, VAT ID behavior, refund, webhook, payout, and account review before putting every product behind one provider.