What's your project?
As someone who has evaluated and purchased chassis' for a business that sold 6,000+ servers / year I can tell you that the cheap rackmount cases are just that.
Supermicro is the best
IStarUSA, AIC are OK. Chenbro is expensive.
Some of the really cheap ones, I've evaluated a case from Athena Power for example, had PCI slot covers that were cut by a jigsaw.
Here's a $99 4U from iStarUSA
http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=7973657&CatId=3427