Do not get Starbucks here, unless you really have NO time to spare during your cram session or while you run to class. They charge you more than what you would usually pay at a regular Starbucks that is not university affilated, and their drinks is not extra amazing. You pay so much to attend UofT, why should you pay extra for your Starbucks? And yes, the extra cents count, especially if you're a student and you're on student loans!
The Starbucks on campus seem to not adhere to the same standards as the regular franchises as the ones at UofT do not have the same products (cups, thermos, etc) or snack products... if at all, most of the time they don't even carry these products! So yes, spare yourself and take a walk to a "real" Starbucks. The oxygen might do your brain some good as you try to overload it with stuff that you will never have to use in real life after graduation.