How does Gumroad pay you?

Hello there, I'm curious to know about the payment process on Gumroad. Could you elaborate on how exactly Gumroad pays its creators or sellers? Do they use a specific payment gateway? Are there any fees involved in the transaction? And lastly, how quickly can creators expect to receive their earnings after a sale is made? It would be great if you could provide a detailed breakdown of the payment process on Gumroad. Thank you!