Where to find Dell-XPS-like cases?

I'm truly enthralled by the gorgeous design of Dell XPS boxes (from 630, 720 to 730). The problem is however these are proprietary cases that are not sold in the open market. I'll settle for a high-quality imatation, however, having searched for quite a bit I came up empty-handed. I'd greatly appreciate it if someone here can point me the right way.

TIA.

PS. Does anyone know who manufacture current crop of Dell XPS cases? I know in the past, FongKai made cases for Dell desktops, and also sell them to the public under their own branding.