First, your calculator is way off. According to coinwarz, if I were on a multipool, 30MHs makes about $10 to $15 a day. Second, FTC gets in the range of $7 to $10 most of the time. I can also rent my hardware at betarigs and others for $6 to $9 a day. As for trust, I participate in project oriented forums and have not done as much posting here.