The cost of the timing lights depends on the type of unit you purchase. The inductive light is the most common option for DIYers. It is available under $70. These units come with Xenon lights and a plastic case. If you want to invest in a better option, then we recommend the advanced timing lights. They can range anywhere between $70 and $100. The specialty of this model is its advanced adjustment buttons and dwell indicators. These products are available in a metal housing. You need to handle it carefully as metal housing can cause electrocuting.