Perhaps you should have planned ahead?
If you truly are broke, then you probably shouldn't be concerned about buying harddrives. If you're on your own, like me, then when you get down to $12 in savings+checking combined, you worry about food.

And if you're still with parents, then perhaps you should start learning proper money management, and *ahem* plan for future unseen circumstances? Car repairs are the thing that have a tendency to stick it to me. :/