Just because you haven't had a complaint doesn't mean it is right.
Hmm ok put it this way what if you were a beginner and signed up for a lesson that was 70 dollars for minimal basics. Ok now you start exploring wanting to get your own horse and or change places only to find out it is half the price you've been paying and double the amount of what you get to do/ learn. Now how would you feel about that?
I would be ticked off and would definitely tell everyone about it. I am not out to ruin people trying to become trainers and make a name for themselves however you bet I will warn people against someone overcharging.