2026 Merchant-of-record fee card ($19). Dated 25 August 2026. US-card rates for Polar, Lemon Squeezy, Stripe Managed Payments, and Stripe plus Tax Basic. Keep-vs-fee math on a $49 sale. Vendor URLs. Not legal or tax advice. Free sample: https://brennanhaley.gumroad.com/l/mwtck Paid: https://brennanhaley.gumroad.com/l/kfmpq