If I can find someone trusted, that lots of people know, I will trade 300 Dollars for 13.5 bit coins. !
If you are within 120 miles of Chicago, I might be willing to meet up with you for this exchange.
If you are willing to send U.S. cash, and are willing to wait until I receive the cash, I'd be willing to perform this exchange for you as well.
If you have access to a BMO Harris bank branch, and are willing to deposit cash into a bank account, I'd probably do the exchange as well.
Most other forms of payment are either too reversible, too inconvenient, or both for me to bother with them.