Retainer
Charges monthaly fees for services
Pay Per Lead
Charges based on the number of leads that are brought into the business
Pay Per Show
Charges based on number of shows
Pay Per APPT
Charges based on number of applications generated
One-OFF
Non-retainer approach where someyhing is charged based on singular project
Productized
Set it and forget is model without having much fulfilment services typically as a tool set.