I just bought the used textbooks through amazon. Reading the textbook on my laptop might be too distracting.
I went ahead and bought Asics Gel Contend 5 SL in white. I'm HOPING that they won't get too strict on the off-white trim near the soles. There's always New Balance shoes. I looked for performance and durability in my shoes. In terms of comfort I always have the option of buying insoles.