$172.00!!??!! OMG!

I would have to live in a swamp and have fog 18 hours a day to do that. I assume, you didn't actually buy it, but dayum!

As for the lights themselves, I have had 5 vehicles with them and probably have not had them on for more than 2 hours total. A high quality, properly aimed fog might help some, but most stock fogs are of little value ad from what I've seen.

Even the Prius fogs didn't do much. All it did was make the pavement easier to see for 50 feet in front of the car. The main beams were already lighting it though, the fogs just made it a touch brighter. I guess it would be okay at low speeds in really bad weather, but it was completely worthless on the highway.