I have too much experience fixing other people's SoN hub connections by the side of the road while I'm being eaten alive by mosquitos. It only takes one time forgetting to unplug the connectors while taking the wheel off before it's worth $30 to me. I know that price is a bit ridiculous, but having lights vs. not having lights doesn't really have a price. I used to bring a crimper to events for exactly this problem, because people would put their bike in their car with the wheels off and the wires ripped out of the connectors. I doubt that Schmidt would endorse this feature of their coaxial connectors, but it does work that way.