My e-bike suddenly lost power after hitting a pothole. The repair shop owner, without even removing the seat, demanded 800 to replace the motor and controller. He even claimed that without him, my bike was just scrap metal. I didn't argue. I pushed the dead-heavy bike into the most remote, dead-end alley. No one knew that with that one turn, I would completely overturn his three-year monopoly of the local repair scene.