Hi! I'm just curious about current/past students' experiences with buying textbooks for uni. I'll be doing BCOM so my question is specific to Commerce but feel free to answer the poll and add your two cents even if you're doing/have done another course.
If you did get through without buying textbooks, I'd love to hear any tips you might have! 
Hi! Well I'm doing English Literature/Philosophy, so I don't need any textbooks per say, but I need to buy novels (for English) and course readers from the uni for Philosophy. Having said that, there was one subject for English where I needed to read a novel a week and I read none of them (used online summaries/resources) and still managed to get a credit. However, for another subject I did in English (it was a Shakespeare subject), it would have been pretty hard to get good marks if I hadn't read most of the plays we were looking at (there were roughly 5). I kind of knew I couldn't get away with not reading the Shakespeare texts because in class we were going really in depth, so use your discretion! For one of my Philosophy subjects, I did the entire subject without reading online uni notes, buying the course reader, and still managed to get a distinction (but I did go to all my lectures and tutorials).
So really, if you just don't want to buy textbooks, wait a couple weeks and see how the subject plays out. If it's a really slow paced course with minimal reading, you could probably get away with not buying textbooks. However, this being said, lectures and tutorials are your primary source of information anyway. If it's a really fast paced and strenuous subject and you find yourself falling behind in the first few weeks, then definitely buy the textbook. You can always sell it after you're done with it anyway! If not to the book shop in your uni, then online for students who are looking for second hand textbooks.
Lastly, don't buy textbooks before you've had a look online for their PDF form! So many textbooks are available online, as well as in your uni library. Even on your uni website, there will be heaps of books/novels/articles that you can use in essays or in your subjects, so browse through before splurging on textbooks.
Good luck in uni!