How much does P2P cost?

I'm curious to know, could you please elaborate on the cost structure of P2P transactions in the cryptocurrency space? Specifically, are there any fees associated with this peer-to-peer method of exchange, and if so, how are they typically calculated? Additionally, are these costs fixed or variable, and how do they compare to traditional financial transaction fees? Understanding the financial implications of P2P transactions is crucial for making informed decisions in the world of cryptocurrency, so I'm eager to gain a clearer picture.