What I, as a college student, buy at the grocery store. First time I took a bus to the grocery store away from home...my Freshman year..so this was a while ago.
Mug - gotta have that cuppa!
Black Radiance Lipsticks (some luscious dark colors, oh yes!)
Head phones that don't hurt my ear
Amish potato salad
Chobani Apple Cinnamon yogurt - my favorite, besides the Plain yogurt
An owl charm
Yep, all these things came in handy to me!
Since then, I've taken a few trips every once in a blue moon. But now, it's all about SAVING. I'm fortunate to have a meal plan so why buy things off campus that I can already get at the cafeteria or other food courts (that has already been paid for through student fees)? Unless what the dining services offer is not appealing. Or something that I need or want that the services are lacking...like Goldfish (the snack!).
Unfortunately, the campus stores are very expensive and is an injustice to the students who are already paying thousands of dollars to attend university. You might pay $2 - $3 for a box of cereal at a store in town, but end up paying $5 - $6 for the same cereal, yet half the size, in the student stores at my university!
So yes, you have to weigh your options with anything. There are certain cases where buying food or snacks from stores in town is more sufficient. Other times, if the food or snack is already paid for (Thank your parents, or whoever helped to pay it!), then it's best to stay on campus and save your money.