What's unfair about price discrimination? It is endemic to real capitalism in markets all over the world, where sellers are simply exercising their right to name their price. If you don't accept the price of the service, then walk away. If you accept it, don't complain that other people got it cheaper.
Pricing is as much about emotion as it is about logical evaluations of value. You need to be sensitive about pricing situations where the customer will pay, but only begrudgingly, and so leaves the transaction feeling that they never want to come back and certainly would never recommend you to anyone else.
