I frequently use older editions, and TBH rely heavily on the library rather than buying my own texts. I make an exception for midwifery books that I will likely refer to for a long time, but I refuse to buy a medication book for $160 that will be redundant in 12 months.
depends on the subject. I used an older edition a couple of times because I refused to fork out nearly $200 for a book I already had. I actually found a couple of times that the only difference (checking word for word with the new edition) was that they changed the order of the content. Very frustrating. Or they simply added additional graphs/charts/pictures.
So if they say "read pages 192-200" just check the topic you should be reading as it might be in a different spot in the book.
Yeah it depends on the subject as to whether you can use them. SOmetimes our lecturers have told us either edition will be fine in some cases because they know it can be hard to get them. Check out the Book Depository website though, I've gotten a few from there that are only a fraction of the cost of getting them here in Aus.
I have the same issue with my text books this year, but instead of buying the newer versions, I'm just going to photocopy anything I need from the books in the library.
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