I readily admit that I have a problem - I'm absolutely obsessed with Buying books (nevermind the actually reading them part that might be implied by that statement).  Unfortunately, spending absurd sums of money that I don't possess doesn't mesh well with my current college student and prospective medical school student status.  Therefore, I've become creative with respect to maximizing my steady stream of bookish purchases while simultaneously having enough money to purchase food, pay for laundry, and all of those other unimportant things.