Whats the difference between the arriba textbook 5th edition and 4th edition?

I really need a textbook for my class but all of the local places are sold out and the prices for this book are outrageous. The fourth edition is a third of the price but the class is centered around reading the book chapter by chapter and I would like to know if there is a major difference before I spend alot on the fifth or buy the fourth. I cant seem to find an answer anywhere on the internet. Thanks in advance.Whats the difference between the arriba textbook 5th edition and 4th edition?
I'm sorry that I don't know the difference for the books you mentioned, but I'll say you better get the correct edition. I've seen two whole chapters that is completely new in a textbook, as compared to its previous edition... That's why older editions are selling so much cheaper...



Have you searched on Amazon for your books? For me, I bought all my textbooks there, both used and new ones. Many textbooks can be found there, and they often give good discount:



http://www.amazon.com/gp/redirect.html?i鈥?/a>



Hope it helps :)