Great question! Underglow generally costs between $50 and $600, but the exact cost will largely depend on the quality of the underglow kit you purchase and whether or not you have a professional install it.
It’s possible to find DIY underglow kits online for as little as $50, but these won’t last as long as a professionally installed kit and require at least some level of expertise and the right equipment.
Alternatively, you can purchase an underglow kit and have a professional install it—this will usually range anywhere from $250 to $600, depending on the kit and how long the underglow takes to be installed. Most mechanics charge an hourly rate of $100, so expect to pay at least $100 plus the cost of the underglow kit itself.