I can't begin to tell you how much students get raped at the bookstore for their books. A 4 book set that was to be used across 2 semesters was nearly $300 at the college's bookstore, but Amazon sold it for half-price. I'm sure I could have even checked further (like Half.com as Acacia said) and streched my buck.
I would also agree with Piccolo about cooking for yourself. As someone who cooks for themselves and has worked in various restaurants over the years, I know the cost of food. Not to mention, working in a restaurant will put your food cost nearly to zero
Anyone hear that story about the family who bought everything in bulk and became millionaires? Crazy...
Jam it back in, in the dark.