Honestly it is a hard call but I had this happen as well. I reasoned haircutting is a business - no different from two bike stores competing with each other. If I always bought at Shop A but Shop B was willing to offer better product at lower prices I would give Shop B a try. If your hairdresser takes the change personally then she's in the wrong business. You have the right to a good cut for the right price and nothing is more personal than good hair!