What factors affect pricing?

Last verified against certain.com:

Pricing is shaped by the event product, plan type, and volume you need. For example, Certain Enterprise uses custom annual pricing, while Greet pricing varies by single event, monthly, or enterprise volume: Certain Greet pricing and Certain pricing.

For Greet specifically, cost depends on whether you need one event, a monthly starter plan, or custom enterprise terms. Enterprise tiers also include custom volume, dedicated onboarding, and high-volume API access: Certain Greet.