The thing about gaming mice is that they're all customizable. This means you can get a cheaper mouse and upgrade it as you go, or if you want to save money upfront, just buy the basic features for what's needed in your game of choice (as long as you know which ones). Generally speaking, though, expensive mice are worth it because they have many more buttons than cheaper models - so depending on how much control there is required from gamers when playing their favorite games, some might prefer them over others.