At $80, it's kind of a tough sell, but it looks like they are getting a lot of traffic, so someone's interested. The truth is, $80 may be a better option than having to replace a shattered iPhone 4. After all, it is made of fancy aluminum rather than rubber or plastic.
The website is actually very fussy right now, but it may be all the traffic coming in from the tech blogs like iSmashPhone contributing to that. Still, if you are looking for a fashionable way to protect your iPhone 4, and perhaps even help eliminate or minimize any interference problems you may have, they will be taking pre-orders as soon as they are able to handle their traffic again.
Check out their cases here: ElementCase