You also have to buy things like a lab coat, lab goggles, and lab notebooks. Those you pretty much have to buy from Titles brand new. If you're a lab disaster like me, you may end up buying more than one lab coat (since you're not supposed to wash them ever).
Chem 1A03/1AA3 use the same textbook, but it's expensive. Other than that, all of your courses will have different books.
If you're not a huge textbook learner, you can always just not buy the book, and go to the library if you ever find you really need it, or only buy it for subjects you're weaker in. It's hard to tell before starting first year though, so maybe keep it in mind for second term?
Also, ask your WW reps about books!!! Especially the 2nd year ones
Don't be afraid to get old versions unless the prof strongly recommends against it--there's usually not too much difference between versions, and it will save you a ton of money.