Do you buy older edition textbooks to save money?
What are the pros and cons of buying the previous edition of a textbook to avoid the high prices of the latest edition. Does anyone have any experience with this? For example:
"Porth's Pathophysiology: Concepts of Altered Health States" 9th edition costs $240.55 new but the 8th edition costs $216.56 (90%) less. If you want a used textbook the 9th edition costs $73.29 but the 8th edition is only $15.02 (80% less). Here's a side-by-side comparison (http://whichedition.com/books/porths-pathophysiology-concepts-of-altered-health-statesninth-edition,3869/
) with publication dates, page counts, and publishers notes for both editions.
Which edition would you buy and why?