Best grocery spots near campus that aren't extremely overpriced?

I've been living off of the local corner stores and the campus convenience stores for the last few weeks and my bank account is taking a massive hit. I know there's a Target nearby but I feel like it's a trek if I don't have a car. Are there any decent grocery stores within walking distance or a quick bus ride that actually have decent prices for staples? Also, is it worth making the trip to Komeland or should I just stick to the smaller spots around Green Street? Trying to meal prep more so I'm not spending $15 on a mediocre burrito every single day.