If you don’t mind rising a “precycled” bike, as one shop owner I know puts it, then your costs will immediately drop. A lower-priced bicycle is a good option for a bike commuter, because bike theft is a reality in most parts of the world. Perhaps it’s not quite so painful to lose one or two US$150 bikes as it is to lose one that cost US$1,500. In fact, unless you want a bike for competitive racing or long-distance touring, you should be able to get a very good bike new for something between US$150 and US$650. (One of the biggest factors that decides price is the weight of the bike: the less you pay, the more it weighs.)