>>1944373>>1944322>>1944438I mean, it's expensive because the manufacturers want to make it expensive. If anything, a stepper motor placed in a derailleur is mechanically way simpler than the intricate pieces of a mechanical parallelogram.
I'm all for electronic shifting, it just needs to be made the simple commodity that it actually is instead of the current expensive goobers. Even some DIYers are already making adapt kits for mechanical derailleurs, I fail to see why these wouldn't be as good as a dura-ace mechanical, while using a tourney body strapped to a chink stepper motor and a Xbee.
