If you have the money, and being taught about
PUA is worth that money for you, then there is no problem. It can be a problem if someone scams you and teach you nothing, or is a shit teacher etc.
But there is certainly lots of stuff to learn about what we do, and having a competent wing/teacher is not a luxury we all have for free.
If there is a demand, there will be a supply. There is a huge demand for PU stuff and someone will cash in on that. I go out with my regular group, and I often teach and coach them. No charge as they are my friends etc. But taking a complete stranger out and spending a whole weekend doing nothing but coaching him, of course I would expect him to pay for my time. My time is valuable, and having a good coach/teacher is a short cut that many are willing to pay for as their own time is valuable too.
/Loke