Silverstone ML03 home theatre PC chassis appears very inviting for two reasons. Initially its low styling is very attractive. Secondly, and has more significantly, it's also pretty damn cheap.
Silverstone has got the low cost by make the case from steel and plastic; there's no aluminium here. However, it's efficient knowing that this issue is only ever going to sit below the TV, mostly untouched. You're unlikely need to lug it to LAN events, or regularly open it up to tinker with its innards, so these materials are fine.