I don't want to pay full price for my haircut
Why do you not want to pay full price?
I feel like they always ask for more money than it's worth.
Getting your hair done can be quite expensive, but everyone pays the same prices. Expecting a discount is not acceptable. Pay the full price or do your own hair.
Like no one does any hair except the school barber. All my friends get their haircut for the market price.
There is no reason for you to not pay the full price. You are not to be treated above other customers who pay the full price.