Five Course Limit

 I find it very frustrating that I can only have five courses.  I'm often asked by potential students to teach them something very specific over several weeks, or to teach them for only 30 minutes, etc.  But I can't create a special course or price for them because then I would have to delete one of my five regular courses (which I don't want to do).  Is anyone from italki listening?  I've brought this to their attention several times, and have never received a reply (which is, sadly, becoming more common as the months go on).

Teacher Brad C.