The advantages of paying with bitcoins are most likely the time and how fast the transactions would be completed. Also the fee or the tax that it would have when international or even locally transferred, especially if it became into a different type of money. And also the amount of money that you would transfer wont be limited, as long as you have that kind or amount of bitcoins to transfer woth. These are just some of its advantages, there may be more but for me, these are the only ones that i know.