The cost of installing a screen firstly depends on the quality and brand of the screen you’re considering to install in your car. Typically, a good-quality touchscreen ranges from $150-$200. Generally, the installation cost also depends on how complex the stereo system is, so the more complex the system the higher will be the cost to install. And additionally, if you’re getting it installed by a professional then they can charge anything ranging from $150 to $450. So it’s advised to install a screen by yourself which can save you hundreds of dollars.