How much is Coinbase pro fee?

Excuse me, could you please clarify for me the current fee structure for Coinbase Pro? I'm specifically interested in understanding how much I would be charged for transactions made through this platform. Are there any fixed fees or are they percentage-based? Are there any other factors that might affect the fee, such as the amount of the transaction or the type of cryptocurrency involved? I'd appreciate any information you can provide to help me make an informed decision.