Even though he included all the purchase costs, $3 per trip does show a very economical way to get around. It makes me think I could be a lot more economical with my bike costs, but I have a spending addiction on bikes. I've had it since I was 14 years old. But I do get a lot for all that money spent, a lot of pleasure riding and tinkering and planning and so on. It's not that expensive compared with other things even though part of the spending is a luxury. Every time I ride to work, I save a little money off my subway debit card. My wife owns a car, and I don't need one for myself, so there's a big savings.