I needed another case as I was lending a PC to someone for a LAN but it normally ran as my review test system on my workbench so I went to XCASE and looked for the cheapest thing they had!
Looked around and found
http://www.qtec.info/products/product.htm?artnr=13671
Cost 35 quid inc. P&P which is a bargin, wasn't expecting much although got it today and its cracking. There are some sharp edges and the build quality isn't as good as a more expensive case although its really good for its price and doesn't feel like its going to fall apart!
http://team.amd3d.com/unrealrocks/qteccase.jpg
Thats a pic of it - looks better in real life, also you can just make out my proper case next to it!