my suggestion is if you increase your price, you will lost piano student, because this day parents take music lesson for fun, not a must only some parents take music lesson as high school credit, usually piano teacher that can charge a very high price should be very famous and musician , that they finish music university from a very famous school and their student are very success win lots of piano competition and some after they complete all the requirement from the piano teacher they can get refer from piano teacher for enough marks to refer to their favorite famous university for music degree with music scholarship, every thing is getting so expensive, and piano lesson is not a must, if you increase the price parents will feel its too expensive, when there are so many teacher in your area they can choose maybe their experience and education is higher than you, but same price, than they will think of why i must take lesson from you when they have so many choice, so i dont agree with increse your price unless you are very famous and expert that parents are so willing to pay think you deserve this price for your music degree education!!!!!!!