How flexible are your pricing options? e.g. will I be able to set a fee per kWh or based on time?

Your pricing model can be as simple or complex as you wish. For example, you can integrate flexible pricing based on usage (e.g. 35p per kWh used).

Alternatively, you can make the first hour of charging free, then £2/hour for the next 4 hours, then £5/hour thereafter to encourage your drivers to vacate the parking space.