What is the xExchange fee?

Excuse me, could you please clarify what the xExchange fee entails? I'm interested in understanding the specifics of the charges associated with using this platform for cryptocurrency transactions. Are there any upfront fees, transaction fees, or withdrawal fees that I should be aware of? Additionally, is there a sliding scale based on the volume of trades or a flat rate for all users? I'd appreciate any insight you can provide to help me make an informed decision about using xExchange for my financial needs.