If it's 2 miles and around campus, i wouldn't think you need such speedy road looking bikes, but a hybrid or town bike? I ride between 2-12 miles one way & i did this on a cruiser stuck in 1st gear for a few years & now i have a commuter specific model....

I would also call around bike shops for scratch/dent or other such bikes that you may get a discount on. You'd be surprised what you might find in your preferred price range.

- Andy