You might find the below link useful.
http://vt.offcampuspartners.com/
The rental apparently ranges from 400++ to 600++, for those that are relatively close to the campus 15 to 45 minutes walk to the campus.
Quite a number of undergraduates from my country manage to get by with a monthly budget of approximately $830 (accommodation+food+miscellaneous). I will be visiting from 20 to 23 this month so I guess I could furnish you with more information after that.
I just received an offer from Virginia Tech and will be visiting in few weeks time. How much would accommodation and other living costs be? I will hope to stay within 10-30 minutes walking distance from the campus.