Originally Posted by
Noobtastic
Craigslist is the student's best friend. With your 400 bucks don't forget that there are many factors that dictate how comfortable you are with riding your bike. You will want a bicycle commuting specific bag, a big blinky taillight, a blinding bicycle headlight, a helmet you like, U-lock, mirror, and I like to commute with cycling specific clothing so that I can change into a sweat free t-shirt and jeans
I agree that craigslist can be a good place to look. That's where I've gotten both my upright and recumbent bikes for great prices. I then got all my accessories (fenders, rack, seat bag, lights...) from the LBS or online. I definitely recommend getting a bike that can accommodate a rear rack. It's a lot nicer putting your backpack (or whatever you decide to use) on the rack, especially if it's loaded up with heavier books, clothes, lunch, or anything else.