When we sign up for Ezoic we are given a choice of letting them keep the proceeds from an ad on our site or giving them 10% of the total ad revenue we earn from Ezoic ads. The following is a quote from https://community.ezoic.com/d/929-charges-for-ezoic-monthly regarding the 10% option.
No contracts, no credit cards, 30-day free trial
Sites share 10% of the revenue earned using the Ezoic platform (sites still keep 100% of revenue from any linked Mediation partners).
Personally, I chose the option to let them take the revenue from an ad.
Ezoic premium payments are separate are paid via a credit card payment method. Premium charges are not deducted from ad revenue.