Well, I actually get it for free but I have to send it first class package because it weighs 3oz with the cardboard to protect the note and so doesn't quality for letter rates and that costs me $1.65 plus PayPal has to get their fees of 30 cents plus 3% so I round it up to $2.
The reason for that is I never have time to go to the post office due to work, there closed by the time I get home so it has to be something I can do outside of post office hours. If I had time to go to the post office and do a letter with 95 cent confirmation I would but I don't sorry.