At the thrift shop down the road!
I just go to Jos A Bank. Nothing super fancy, but when you catch the sales right you can get a decent suit for under $200. I don't wear suits very often, but when I do I want it to be fairly comfortable and for me those Men's Warehouse $99 specials didn't cut it. More often than not they were pretty rough feeling.
Just a suggestion...whatever suit you buy from whatever vendor...unless it's a bespoke suit take it to a good taylor for some final fitting, personal fitting for your particular body shape. It makes an off the rack suit look much more like a bespoke suit.
Just go out and look around at any decent department store. They usually have some pretty good sales. I have always bought my suits at Herberger's which is a regional department store in my area. The quality is decent for the price. I'm not sure what stores are in your area, but just take part of a day and do some looking around.
What about J Crew? Their suits have been pretty well reviewed. I know the Ludlow will be near the top of your price range, but the jackets are canvassed (Well, half I'd suppose). I've read that you might be able to get a 15% student discount (if that applies to your situation).
If you are ever in southern cal, check out this place. Excellent prices and service:
http://www.hollywoodsuits.com/
I know it doesn't really help you, as it looks like you are in Ohio.