It depends. If you use our premium plug-in tracker, then you will not need an installer. If you have a person with basic vehicle electrical knowledge, then you should be able to install the units. We have designed our devices with ease of installation in mind and we also provide an installation guide. Each unit must be connected to an ignition source, a constant power source (vehicle battery) and chassis ground. TYT provides all needed cabling and fuse kits. If you do need a professional installer, TYT has a list of installers around the country that you can contract with directly. You should expect to pay between $75 and $150 depending on your geographic location. You should try to negotiate with the installer; you can usually get a better price if you bring the vehicles to the installer or if you can give the installer access to all your vehicles at once (such as during weekends, nights or after hours).