I’ve found a few copies of the textbook online for cheap. Perhaps you would like to do the same? I’ve been searching by ISBN on http://www.gettextbooks.com/

0-321-09336-4
0-321-08777-1

Remember, I’m not endorsing this website, nor do you need to purchase the book. It may simpy be helpful for your particular study habits.

Be careful, read the fine print, and good luck!