| I often ponder that myself. I prefer the lights as well. The only thing I can figure is that they do not sell near as many as the other gauges, and therefore the merchants need to charge higher prices to recoup thier investment on them. Since fewer are sold, fewer are made, therefore the cost of manufacturing must reman higher per set because of production costs.
I think a sale would actually work better, but, hey, I'm no businessman. | 
