I worked in a small high street PC shop for 2 years or so, and would really never have used it were it not for the staff discounts. The experience turned me against them in general - the practise of marking up a USB cable from 82p to 10 quid or so didn't sit too well with me. That said, there was a definite market for it in the town where I grew up - small conservative market town in rural essex, with a lot of wealthy people wanting to get online or do work from home, and no idea how to go about it, so perfectly willing to throw wads of cash at someone to do it for them 
I'd say there would be a market that close to a campus, as long as you did market it towards students, stocking things they're likely to want, as has been said. I would just add that I don't expect students to have the loyalty that the customers from my old town had. If we fixed their PC or gave them good advice, chances are they'd come back when they were looking to update their machine. With a student, even if you rescue their dissertation the day before it's due, don't necessarily expect them to come to you when they want a new machine if they can get one for less from Dell or such.
Good luck with whatever you decide to do anyway

I'd say there would be a market that close to a campus, as long as you did market it towards students, stocking things they're likely to want, as has been said. I would just add that I don't expect students to have the loyalty that the customers from my old town had. If we fixed their PC or gave them good advice, chances are they'd come back when they were looking to update their machine. With a student, even if you rescue their dissertation the day before it's due, don't necessarily expect them to come to you when they want a new machine if they can get one for less from Dell or such.
Good luck with whatever you decide to do anyway
