This sort of question gets more complicated than it needs to be with 'my friend' and the dance instructor.
Let's cut out the extras:
Dance Instructor: The young guy had no experience and he was asking for $100, more than half of what I'm getting.
If $100 is more than half what the dance instructor is getting, then the dance instructor must be getting less than $200. S/he might be getting $199.99 or far less - we don't know.
Student or Learner