Why on earth would you want to pay for a plug that does nothing for your cigarette lighter for? Even if you don't smoke, it might serve as a tool of survival if you and your 3 ever get stuck in the wild and need to make fire. You can always plug it with DC power adapters for cool electronic devices and the like. Also, every now and then Walmart carries a little flashlight the size of the cigarette lighter plug that plugs into the outlet and charges a rechargeable battery for around $15, good for emergencies.