As an Aion Bank Member, you can choose between two membership option: 'Premium Membership' and 'Light Membership'. 'Premium' costs 19 EUR for a month and 'Light' costs 1,90 EUR for a month. There is an increase in Light membership fee from 1.90 euro to 3.90 euro per month, starting from June 5th. 

If you want more information about Aion Memberships and their value, please check links below.
https://aion.be