How much does Coinme charge per transaction?

Excuse me, could you please clarify for me the exact fee structure that Coinme imposes on each transaction? I'm particularly interested in knowing whether there's a flat rate, a percentage-based fee, or if it varies depending on the amount being exchanged. It would be greatly appreciated if you could also elaborate on any additional charges or fees that might be associated with the transaction process. Thank you in advance for your assistance.