Why only on Black Friday?
I would never have bought the Hella Marine navigation lights at the original price. With over 30% off, you can not only save electricity, but it also shows how high the profit margin is between the price and the manufacturing costs. If you buy such lights for home, bicycle, or dog, they cost less than €5. I hope SVB and the market will put more pressure on manufacturers to change their pricing, because the old incandescent bulbs should disappear.