Im building this calculator for independent musicians. As a guitarist i know sometimes is confused decide how much to charge for concerts and performances, but something im sure is that the final price is not just the number of hours u spend playing. There can be transportation, food, equipment, rehearsals, commissions, other musicians, and the profit they want to make. My goal is to build a simple tool that helps musicians estimate a fair price. For this first version I´ll focus on the basic calculation and a simple web interface. Im building this project to learn HTML, CSS, JavaScript, Git, and learn how to turn a problem into a product. Feel free to use it, and if you have any suggestions or improvements, please let me know :D