2026 SaaS Auth, MAU & Enterprise SAML/SSO Pricing Cliff Dataset + Cost Simulator CLI (Clerk, WorkOS, Supabase, Auth0, Kinde)

Verified 2026 pricing dataset (CSV + JSON) and zero-dependency Node.js CLI simulator modeling the "Enterprise SAML/SSO Tax" across Clerk (50k MRU + 1 free SSO, then $75/mo each), WorkOS (Free 1M MAU + $125/SSO + $125/SCIM), Supabase Auth ($25/mo Pro vs $599/mo Team SAML cliff), Kinde ($75/mo Plus includes SAML SSO), Auth0, and Better-Auth. Calculates exact monthly auth bills based on MAU count, SAML connections, and SCIM directory syncs.