I have been using Coinbase for little wile now. I am extremely upset about all of what they do, and they hide. I have not been able to speak with anyone. Their customer service is horrendous at best.
I don't trade tons of money, and because of that, they eat up all the profits. I have made profits every time I sell, but they eat it up. I honestly don't know where to go that charges reasonable or low fees. If someone knows, please reply here.