haha $42 from the faucet sites. Yea, you can use blocktrades , its the easiest, to sell steem dollars to bitcoin and then transfer to coinbase . Blocktrades fees are high. A cheaper solution might be using bittrex - send the steem dollars to bittrex (don't use polo) , sell there and then send the bitcoin to coinbase
If I remember correctly I tried to sign up for Bittrex and they still haven't verified my account. Yeah, finding places that don't charge high fees is kind of hard. But if Bittrex ever verifies me I'll definitely give them a try. :)