If you gonna buy a case, seriously spend some money on it. You'll be much happier with a good solid case that will last you a couple builds over a chintzy one that you'll replace every year because something breaks on it.
Also, check out ZipZoomFly for cases, everything on the site has free ground shipping.
I don't want to spend a lot of money though...i don't need an amazing case but rather a cheap but fairly good one. The NZXT Apollo fits all of my requirments