How much fee does MoonPay charge?

I'm curious to know, can you elaborate on the fee structure that MoonPay imposes on its users? Is there a flat rate for transactions, or does the fee vary depending on factors such as the amount being exchanged, the cryptocurrency being traded, or perhaps the market conditions at the time of the transaction? Understanding the specifics of the fees involved is crucial for users to make informed decisions when utilizing MoonPay's services.