Parking is the biggest commuting expense for me, so I am saving $300 per month. Gas for my commute is about $100. I recouped my ebike cost in about four months. On an average day I can get to work quicker on my ebike. At least once a week there is a traffic jam in the city (DC) where it would extend the car commute 30-60 minutes more, but I don't worry about that anymore.