Sorry to have to say this, but the (most probably) exact same cases ship from Hong Kong for $4 or $5.
http://cgi.ebay.com/NEW-RUBBER-HARD-...item439d55a1d9

Besides the fact that you overpaid by about %300, the cases themselves work as advertised, but make the N900 feel cheap and clunky, IMO. I had mine on for about a week or so, and I missed the dangerously slippery but still satisfyingly silky feel of the real unit.

I had to take it off when I got my soft fabric case,
http://www.meritline.com/cotton-came...--p-36121.aspx
since it was an astonishingly tight fit and there wasn't even room for the extra bulk of the platic case. Now the case sits on my desk, unloved and also unmissed. I suppose if I ever drop the N900 and it gets scrtatched, I'll regret it, but not having a cheap plastic covering on the unit up until that point will probably make it OK. Possibly.