How much is the Elis fee?

Excuse me, could you please clarify the cost structure associated with the Elis fee? I'm interested in understanding the specific amount or if there's a range of fees depending on the transaction size or type. Is this fee a one-time charge or does it apply to each transaction? Additionally, are there any other hidden costs or fees that I should be aware of when using Elis? Thank you for your time and assistance in clarifying this matter.