Good question! This depends on the Charge Point Operator. They set the charging tariff. This can be a rate per kWh, hour or a transaction fee. E-Flux is transparent and always invoices the actual costs of the operator without any surpluses to the charge card user.
For use of the card you pay a fee per transaction of 32 cents or a fixed rate of €3,23 per month, depending on the chosen subscription.