What are the costs for buying and selling bitcoin?
Sure, here's a description that simulates the tone of a questioner based on the given paragraph: "Hello, I'm interested in buying and selling bitcoin, but I'm not sure about the costs involved. Can you explain to me what the fees are for purchasing and selling bitcoin? Are there any additional charges that I should be aware of? I'd like to have a clear understanding of the overall cost structure before I make any transactions. Thank you for your help.