My underground business!

So I am learning to love my talents this week. I am grateful for my knack for technology and my bartering skills. I work with a lot of older teachers and they are on the verge of tears trying to do their report cards. Well, I got mine done in less than an hour so I offered to do theirs for pay. I have done two teachers' report cards already and they each payed me $30 for an hour of work. They also have already asked me if I will do next terms report cards. I am definitely okay with making $30 an hour during report card time. I told them to spread the work, but keep it on the down low!