No I'm almost positive they, like voodoo PC makes custom cases that you can't buy. You'll just have to look on ebay for a deal on an older cheaper Alienware system as the case design has changed little in years.
They do not sell their cases, and you cannot get them anywhere. They're Alienware exclusive, I'm afraid. You can probably find some knock-off's if you look around, but they probably won't be exactly same. I would think Alienware has an exclusive agreement with some company to make the cases for them only. However, that doesn't stop that company or others from making imitations of them. Again, you can't get an Alienware case off them.
True, eBay might be the only shot you have. I was thinking about retail stores, but hey, if you can buy Britney Spears fart in a jar there, I'm sure you've got a shot at finding an Alienware case on it.
http://www.xcase.co.uk/acatalog/Raidmax_Ninja.html They're similar. http://cgi.ebay.co.uk/ALIENWARE-rep...ryZ80168QQssPageNameZWDVWQQrdZ1QQcmdZViewItem Alienware-esque case.
Well if Dell is good enough to impose the whole "rock bottom price" thing we should see a lower price tag, quality might not be the same though.
According to latest informations, Alienware is producing the same PCs and everything else, but Dell is the owner of company. Alienware become a gaming part of Dell corporation. How this will work I can imagine